ZKTeco Bio31S Fingerprint Module in Dubai, UAE
Built for developers and system integrators rather than end-user desktop scanning, the Bio31S is an embedded electro-silicon fingerprint module that can handle fingerprint enrollment, image capture, template extraction, matching and template management inside a host system. Its combination of 508 dpi imaging, USB 2.0 or UART communication, encrypted fingerprint data and compact module dimensions makes it a practical component for custom access, attendance, kiosk, identity and equipment-integration projects where biometric capability must become part of a larger product.
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Quick Product Information
ZKTeco
Bio31S
Embedded electro-silicon fingerprint module
280 MHz DSP, 32 MB flash, RTOS
508 dpi, 208 × 288 pixels, 256 grayscale
USB 2.0 or UART at 115,200 bps / TTL 3.3 V
ZKFinger V10.0, ISO 19794-2, ANSI-378
5 V through USB or 3.3 V through TTL interface
OEM devices, kiosks, terminals and custom biometric systems
Not supported
Contact FourTeck.com for current options
Share host-device, interface, quantity and development requirements
Fast Decision Snapshot for Project Buyers
The key decision is not simply whether the module can read a fingerprint; it is whether its electrical interface, physical footprint, biometric workflow and software path fit the host product. The Bio31S is best considered as a component for an engineered solution. Buyers who only need a finished USB desktop reader or a complete access terminal should evaluate a different ZKTeco device type.
OEMs, hardware designers, system integrators and development teams embedding fingerprint recognition into their own terminal or appliance.
A compact offline module handles core fingerprint capture and matching functions without requiring a complete standalone biometric terminal.
Confirm USB versus UART communication, power design, connector arrangement, enclosure space, template format and intended software integration.
The vendor specification states that fingerprint liveness detection is not provided, so applications requiring anti-spoofing should be assessed separately.
Suitable for controlled embedded environments where the host system can provide the required electrical, mechanical and application integration.
FourTeck.com can help procurement teams confirm model details, related alternatives, sourcing requirements and quotation information before an order is placed.
Product Overview
The ZKTeco Bio31S Fingerprint Module is an embedded biometric component intended for integration into another system rather than use as a finished end-user device. That distinction matters for procurement. A standalone fingerprint scanner normally arrives with an enclosure, cable and a defined desktop workflow. An embedded module instead becomes part of a kiosk, terminal, controller, machine, cabinet, attendance appliance, authentication device or custom-built product. The host design must provide power, communications, mechanical mounting and an application layer that uses the module’s biometric functions.
At the hardware level, the Bio31S uses an electro-silicon sensor and a 280 MHz DSP supported by 32 MB of flash and an RTOS environment. ZKTeco specifies 508 dpi fingerprint capture, an effective collecting area of 10.4 × 14.0 mm and an image size of 208 × 288 pixels. The module supports fingerprint enrollment, image acquisition, template extraction, 1:1 comparison, 1:N comparison and template deletion. This makes it useful when the host product needs to register people, compare a presented fingerprint with one stored identity, or search a local group of stored templates through the module’s supported workflow.
Integration flexibility comes from USB 2.0 and UART communication. The UART interface is specified at 115,200 bps with TTL 3.3 V signalling, while power can be provided at 5 V through USB or 3.3 V for the TTL interface. The module also supports ZKFinger V10.0 templates together with ISO 19794-2 and ANSI-378 template formats, while ISO 19794-2/4 and ANSI-378 support can help teams working with established biometric data structures. Image formats include RAW, BMP and JPG.
For a UAE project, the practical value lies in fitting the module to the application rather than purchasing solely from the model name. FourTeck.com can support buyers by reviewing intended use, interface choice, quantity, integration environment and related requirements before quotation. If the project instead requires a finished reader, liveness detection, a larger capture area or a different sensor technology, FourTeck.com can also help identify a more suitable ZKTeco alternative.
Key Business Benefits
◆ Embedded Design Freedom
Because the module is supplied as an embedded biometric component, engineering teams can build fingerprint recognition into a product without designing the sensing and core matching functions from the beginning. This can simplify the biometric portion of a custom hardware project while preserving control over the final enclosure, interface, workflow and application experience.
◆ Local Biometric Workflow
Enrollment, template extraction, fingerprint comparison and template deletion are supported by the module. This provides a useful foundation for devices that need a self-contained biometric function at the equipment level, subject to the host software design and the project’s database or identity architecture.
◆ Compact Mechanical Footprint
The motherboard measures 42 × 26 × 5.08 mm and the sensor 34.06 × 20.4 × 2.47 mm. Those dimensions make the module relevant to compact terminals and devices where mechanical space is limited. Product designers still need to allow for cable routing, mounting, finger access, protection and serviceability.
◆ Flexible Host Connectivity
USB 2.0 and UART provide two practical integration paths. A project can select the interface that fits its controller, embedded computer or system architecture. This reduces the chance of forcing a host platform around one communication method, although developers should confirm voltage levels and connector implementation before final PCB or harness design.
◆ Standards-Aware Templates
Support for ZKFinger V10.0, ISO 19794-2 and ANSI-378 template formats gives system architects options when planning biometric data handling. Standards support does not automatically guarantee interoperability with every external biometric system, so actual compatibility should be validated with the application and data exchange process.
◆ Practical Fingerprint Handling
ZKTeco states that the algorithm supports automatic correction recognition and is intended to work with dry, wet or rough fingerprints. For businesses deploying equipment in varied user environments, this can reduce friction at the capture stage, although field performance should always be validated with representative users and the final enclosure design.
Product Highlights for Integrators
A strong embedded biometric project depends on the complete system around the sensor. The Bio31S brings several useful functions into one module, but procurement and engineering teams should still separate confirmed module capability from responsibilities that remain with the host product.
Supports enrollment, image capture, template extraction, comparison in both 1:1 and 1:N modes, and template deletion.
Provides 208 × 288 pixel fingerprint images with a 10.4 × 14.0 mm effective collecting area and 256 grayscale levels.
The vendor specification lists encrypted fingerprint data as supported, which is relevant when planning secure handling within the module workflow.
ZKTeco notes an open application programming interface such as an SDK, giving developers a route for integrating biometric functions into an application.
RAW, BMP and JPG output support can help when a project needs image handling in addition to template operations.
This is an important design consideration. Applications that require presentation-attack detection should not assume that the module provides it.
Before purchasing, buyers should also confirm the host operating environment, SDK availability for the planned development platform, the exact connector and harness requirement, the storage model for enrolled templates, physical protection around the sensor, and whether the project needs a feature such as liveness detection that is outside the listed capability of this module.
Technical Specifications
| Specification | Details |
|---|---|
| Brand / Model | ZKTeco / Bio31S |
| Product Type | Embedded electro-silicon fingerprint module |
| CPU | 280 MHz DSP |
| Flash | 32 MB |
| System | RTOS |
| Encrypted Fingerprint Data | Yes |
| Fingerprint Liveness Detection | No |
| Communication | UART 115,200 bps / TTL 3.3 V; USB 2.0 |
| Interface Socket | Molex 51021-0700, 7 pin, 1.25 mm |
| Image Resolution | 508 dpi |
| Effective Collecting Area | 10.4 × 14.0 mm |
| Image Size | 208 × 288 pixels |
| Image Formats | RAW, BMP, JPG |
| Template Formats | ZKFinger V10.0; ISO 19794-2; ANSI-378 |
| Template Size | 1–4 KB for ZKFinger V10.0; 1,568 B for ISO 19794-2 |
| Grayscale | 256 |
| ISO / ANSI Support | ISO 19794-2/4; ANSI-378 |
| Material | Electro-Silicon |
| Power Voltage | 5 V USB / 3.3 V TTL interface |
| Power Consumption | 5 V 200 mA normal operation; 5 V 100 mA idle mode |
| Operating Environment | -20 °C to +50 °C; up to 90% relative humidity as listed by vendor |
| Motherboard Size | 42.0 × 26.0 × 5.08 mm |
| Sensor Size | 34.06 × 20.4 × 2.47 mm |
| Warranty / Availability | Contact FourTeck.com for current supplier, quantity and warranty guidance |
Choosing the correct configuration is mainly an interface and application exercise. A USB-connected design may be convenient when the host is a small computer or controller with a USB stack, while UART can suit embedded control boards where serial communication is easier to expose. Electrical design must follow the module’s stated voltage requirements, and the 7-pin Molex connection should be accounted for early in harness planning. Mechanical teams should provide enough finger access around the sensor, protect the exposed assembly appropriately and avoid placing surrounding material where it interferes with normal finger placement. Software teams should decide whether they will use ZKFinger V10.0 templates or a standards-based format and verify the exact API or SDK path for the intended host platform. If the solution requires centralized identity storage, cross-device template interchange, anti-spoofing or a finished enclosure, those requirements should be treated as separate design items rather than assumed from the module specifications.
Configuration and Buyer Guidance
A biometric module should be purchased as part of a system design, not as an isolated component. Before requesting a quote, project teams can reduce integration risk by preparing a short technical brief. That brief should explain what the device will do, how fingerprints will be enrolled, where templates will be stored, whether matching is local or coordinated by a wider application, and what controller will communicate with the module.
Identify the embedded board, industrial PC, controller or computing platform and the development operating system. This helps determine whether USB or UART is the more practical connection and what software support must be verified.
Define enrollment, verification, identification and deletion behavior. A 1:1 workflow compares a fingerprint with a claimed identity, while 1:N matching searches across a set of enrolled templates.
The module does not list fingerprint liveness detection. If the security policy requires presentation-attack resistance, the project should consider a different sensor or an additional control rather than assuming this capability is present.
Review the board and sensor dimensions, cable bend radius, finger approach angle, front-panel opening, protection from contamination and the ability to replace or service the assembly later.
ZKFinger V10.0 and standards-based template formats are listed. If templates must move between systems, confirm real interoperability through testing instead of relying only on format names.
Provide quantity, target application, planned interface, destination, expected project schedule and any requirement for development material, accessories or alternative models. This gives FourTeck.com a clearer basis for quotation support.
For replacement projects, also share the current module model and the reason for changing it. Physical dimensions, communication commands, template format and software behavior can differ even between visually similar biometric modules. A replacement should therefore be treated as an engineering change that needs compatibility review, not a simple part-number swap.
Ideal Business Use Cases
The module is most relevant where a business, integrator or manufacturer needs to add fingerprint recognition to another device. It is not the right answer for every biometric project, and its value is strongest when the host product can make use of its compact embedded architecture.
Custom Access-Control Hardware
An integrator building a dedicated door terminal, cabinet controller or access appliance can use the module as the fingerprint capture and matching component. The broader system still needs the access logic, credential database, lock control, event management and any network communication required by the project.
Time and Attendance Equipment
Manufacturers developing an attendance terminal can incorporate fingerprint enrollment and recognition while building their own user interface, data synchronization and workforce application. It is appropriate when an embedded module is preferred over mounting an external fingerprint reader.
Self-Service and Identity Kiosks
A kiosk can use fingerprint matching as one step in an identity workflow, provided the application, enclosure and privacy controls are designed appropriately. The compact sensor can be positioned in a front panel while the main board remains within the kiosk enclosure.
Industrial or Equipment Authentication
Machinery, cabinets, test equipment or specialized terminals can use fingerprint verification to restrict certain functions to enrolled users. The host system must still define permissions, audit requirements, fallback credentials and what happens if a fingerprint cannot be captured.
OEM Product Development
Original equipment manufacturers can include a biometric feature without sourcing a complete standalone terminal. This approach is useful when branding, enclosure shape, user workflow and electronics are unique to the OEM product and the biometric subsystem must fit within that design.
Prototype and Pilot Systems
Engineering teams evaluating fingerprint authentication can use the module in a prototype before committing to a larger production design. A pilot should test real users, environmental conditions, enclosure ergonomics, host communication and application error handling rather than evaluating capture quality in isolation.
In all of these cases, the module is one building block. A complete business solution can also require identity management, access policy, networking, secure data handling, power protection, enclosure engineering, software development and user support. Buyers should scope those surrounding requirements at the same time as the biometric component.
ZKTeco Bio31S Fingerprint Module Capture and Matching Workflow
The main value of the module is the way it combines fingerprint acquisition with core biometric template operations. Enrollment begins by capturing a fingerprint image and extracting a template that can be associated with an identity in the host application. For verification, a 1:1 comparison can test the presented finger against a specific stored identity. For identification, 1:N matching allows the workflow to search among enrolled templates. Template deletion is also supported, which is important for lifecycle management when users leave, credentials are revoked or data retention rules require removal.
This capability can simplify embedded product development, but it does not replace application design. The host still needs to decide how a person is identified, where account metadata is stored, who is allowed to enroll new users, what happens when matching fails and how audit events are recorded. In a secure implementation, developers should also consider access to template data, encryption outside the module, administrative authentication and data retention requirements. The vendor specification lists encrypted fingerprint data, which is useful, but security should be planned across the entire device and software stack.
Image capture at 508 dpi with RAW, BMP and JPG output also provides flexibility when the application needs image-level handling. Projects should avoid collecting or retaining fingerprint images unless there is a defined business and compliance reason, because biometric information requires careful governance. The right design is usually to minimize the amount of sensitive information stored, control administrative access and document the enrollment and deletion process. FourTeck.com can help buyers clarify hardware selection and sourcing questions, while the system owner should ensure that the final biometric application meets its organizational security and privacy obligations.
ZKTeco Bio31S Fingerprint Module Connectivity and Embedded Integration
USB 2.0 and UART make the module adaptable to different host architectures, but interface selection should be decided early. USB can suit a host platform that already supports USB peripherals and where a cable-style connection is convenient. UART is often attractive in deeply embedded products because a microcontroller or system board can communicate over a straightforward serial interface. The listed UART rate is 115,200 bps with TTL 3.3 V signalling, so designers should ensure that the host electrical levels match and avoid treating the serial interface as an RS-232 voltage-level connection.
Mechanical integration is equally important. The module uses a Molex 51021-0700 7-pin, 1.25 mm socket, and the board and sensor are separate physical elements that must fit into the host enclosure. A CAD design should account for the 42 × 26 × 5.08 mm motherboard, the 34.06 × 20.4 × 2.47 mm sensor, mounting tolerances, cable routing and access for assembly. The finger landing area should remain easy to reach and should not be obstructed by an excessively deep bezel or sharp enclosure edge.
Power planning should follow the intended interface. The vendor lists 5 V through USB and 3.3 V for the TTL interface, with 5 V consumption figures of about 200 mA during normal operation and 100 mA at idle. The host power supply should include appropriate margin and protection rather than being sized exactly to a nominal figure. For commercial deployments, prototype testing should include repeated enrollment, rapid matching cycles, power-up behavior, communication recovery and operation at the expected temperature range. This is the stage where interface issues are cheaper to resolve than after a production enclosure or PCB has been finalized.
ZKTeco Bio31S Fingerprint Module Data Formats and Security Planning
Template format support is particularly relevant when the biometric module must fit into a broader identity architecture. ZKFinger V10.0 is the native ZKTeco template technology listed for the module, while ISO 19794-2 and ANSI-378 give projects standards-oriented options. This can be useful for developers who want a documented template structure or need to plan future data exchange. However, standards support should not be interpreted as a guarantee that any two biometric products will produce perfectly interchangeable templates. Algorithm versions, minutiae handling, quality thresholds and implementation details can affect real compatibility.
A sensible project therefore validates interoperability with the exact software and devices that will be used. If the module is replacing an earlier sensor, test existing enrolled templates before promising that users will not need to re-enroll. If multiple terminal types will share a central database, verify whether the server stores native templates, standards-based templates or a product-specific representation. Re-enrollment planning is often easier than discovering incompatibility during rollout.
Security planning also needs to recognize the module’s stated limits. Encrypted fingerprint data is listed as supported, but fingerprint liveness detection is not. A high-assurance deployment may therefore require another sensor, another factor such as card or PIN, stronger supervision or a different architecture depending on the threat model. The correct product is the one that matches the security requirement, not necessarily the smallest or easiest component to integrate. FourTeck.com can help compare related ZKTeco module options when the project brief calls for a different capture technology, finished housing or additional biometric functions.
What Should You Know Before Choosing This Embedded Fingerprint Module?
The questions below focus on the practical decisions that determine whether an embedded biometric component fits a real product design. They cover host compatibility, security expectations, mechanical integration, biometric workflow and quote preparation so technical and procurement teams can evaluate the module from the same project brief.
Is this suitable for a finished employee fingerprint scanner requirement?
Not by itself. This is an embedded module intended to become part of another device. A buyer who needs a ready-to-use desktop scanner, attendance terminal or door-access reader should usually choose a finished ZKTeco product instead. The Bio31S makes more sense when a development team controls the host enclosure, electronics and application and specifically needs a biometric component for integration.
Which connection should we choose: USB or UART?
Choose according to the host architecture. USB 2.0 can be convenient for computers and embedded platforms with a supported USB stack. UART at 115,200 bps can suit controller-based designs using 3.3 V TTL signalling. The project should verify electrical levels, driver or SDK support, connector implementation and recovery behavior before the interface becomes part of a production PCB or cable harness.
Can it be used for both verification and identification?
Yes, the published feature set includes 1:1 and 1:N comparison. A 1:1 workflow verifies a fingerprint against a claimed identity, while 1:N searches across enrolled templates to identify a match. The host application must still define enrollment, identity records, permissions, database design and what should happen when a match is not found or the capture quality is poor.
Does it provide liveness detection for anti-spoofing?
No. ZKTeco’s listed specification states that fingerprint liveness detection is not supported. This is an important selection point for high-security applications. If the project requires presentation-attack detection, buyers should review another biometric module or add compensating controls rather than treating encryption or ordinary fingerprint matching as equivalent to liveness detection.
Will it fit into a compact terminal enclosure?
The module is physically compact, with a 42 × 26 × 5.08 mm motherboard and a 34.06 × 20.4 × 2.47 mm sensor. Final fit depends on more than those dimensions. Designers should include connector clearance, cable routing, mounting hardware, front-panel thickness, finger approach, sealing needs and service access before declaring mechanical compatibility.
Can we reuse fingerprints from an older system?
Possibly, but it should be tested rather than assumed. The module supports ZKFinger V10.0, ISO 19794-2 and ANSI-378 template formats, yet actual interchange can depend on how the older product generated and stored templates. For a migration project, provide the existing device, algorithm or template format information and plan a proof-of-concept before deciding whether user re-enrollment is unnecessary.
What development information should be prepared before purchase?
Prepare the host operating platform, preferred communication interface, expected biometric workflow, template storage design, enclosure constraints and deployment environment. Developers should also identify which SDK or API they intend to use and whether they need image capture as well as template operations. Sharing this information early helps separate hardware suitability from software work that must be completed by the project team.
What should we check for a replacement or redesign?
Compare dimensions, connector pinout, voltage, communication protocol, sensor opening, software commands and template behavior. Even when two modules appear similar, a direct physical or software replacement is not guaranteed. An engineering sample and bench test are often appropriate before a production redesign, especially when the previous product has a large installed base or retained enrollment data.
What information helps FourTeck.com prepare a more useful quotation?
Share the required quantity, project location, expected order timing, host platform, interface preference, application type and any need for related biometric alternatives. If the project is a replacement, include the current part number and reason for change. This allows FourTeck.com to focus the quotation and availability discussion on the actual integration requirement rather than only the model name.
Business Requirements to Match Before You Buy
For a custom terminal with limited internal space
The compact board and sensor can fit space-conscious designs, but enclosure engineers should validate mounting, connector clearance, finger access and front-panel geometry using the published dimensions before committing to tooling.
For a device that needs local fingerprint matching
Enrollment and 1:1 or 1:N comparison functions make the module relevant to embedded verification and identification. The host application must still manage user records, permissions and system behavior around the biometric result.
For teams choosing between USB and serial integration
The module supports both USB 2.0 and 3.3 V TTL UART. The right choice depends on host hardware, software support, cable architecture and the team’s ability to validate communication behavior during development.
For projects migrating biometric templates
Standards-oriented template formats are listed, but migration should be tested with real enrollment data. Buyers replacing an older system should plan for the possibility of re-enrollment if the existing templates are not interoperable.
For security policies that require anti-spoofing
This module should not be selected on the assumption that it detects fake fingerprints. The stated liveness feature is absent, so a higher-assurance requirement may point to another sensor or a multi-factor design.
For procurement teams ordering for a development project
A useful purchase brief includes quantity, target device, host platform, interface, mechanical constraints and rollout plan. This helps sourcing and engineering teams evaluate the same requirement and reduces the risk of buying a module that needs redesign work later.
What Buyers Should Check Before Purchase
A successful biometric integration depends on a sequence of checks that ordinary product listings often compress into a few specifications. Start by confirming that an embedded module is genuinely the required form factor. If the project expects a finished USB reader, a wall-mounted access device, a time-attendance terminal or an enclosed scanner, a bare module adds engineering work that may not be necessary. If the project is building its own terminal, the embedded approach can be exactly the right fit.
Configuration Fit
Confirm host interface, voltage, enclosure dimensions, sensor placement and biometric workflow. A change in any of these can affect PCB layout, harness design, software or mechanical tooling.
Software Compatibility
Do not assume that every development platform has the same SDK path. Check API documentation, operating-system support and the exact functions the application needs before committing to production quantity.
Security Requirement
Separate encrypted data handling from liveness detection. The module lists encrypted fingerprint data but no liveness detection, so high-assurance authentication may require another design choice or an additional factor.
Availability and Warranty
Ask for current supplier availability, quantity lead considerations and warranty handling for the specific order. These commercial details can change and should be confirmed at quotation stage.
Replacement projects deserve particular attention. Similar biometric modules can differ in electrical pinout, firmware behavior, template format, image dimensions and command set. If the existing product already has thousands of enrolled users, the cost of re-enrollment can be more important than the module purchase price. Test template compatibility with real data and document the fallback plan before rollout.
Long-term cost should also include development, enclosure work, cable assemblies, software maintenance, field replacement and user support. For prototypes, request enough units to support bench testing, mechanical testing and a small field pilot. For production orders, provide FourTeck.com with the expected quantity range and schedule so sourcing discussions can be aligned with the project stage. If another ZKTeco module better fits the final requirement, comparing options before tooling or software is locked down can save substantially more than changing the hardware after launch.
UAE Availability and Service Support
FourTeck.com supports business inquiries for biometric modules in Dubai and across the UAE with assistance for product selection, quotation requests, integration discussions, delivery coordination and warranty guidance. Availability can vary according to supplier position, required quantity, project timing and whether the requested part is for prototyping, replacement stock or a larger production requirement. For that reason, the page does not present a fixed stock promise.
For an embedded fingerprint project, the most useful inquiry includes more than a model number. Share the host platform, planned interface, approximate quantity and intended use. If the design has already been created around a connector or earlier biometric module, include the existing part details and any compatibility constraints. FourTeck.com can use that information to discuss sourcing and related product options more efficiently.
Warranty handling and delivery arrangements should be confirmed with the quotation because terms can depend on supply source and order conditions. Buyers planning a rollout should also allow time for engineering validation before purchasing full production quantity. This is especially important for biometric components, where mechanical fit and software integration need field confirmation.
Coverage for Business Buyers Across the Emirates
Businesses in Dubai, Abu Dhabi, Sharjah, Ajman and other UAE locations can contact FourTeck.com for product availability, quotation support and guidance on the information needed for an embedded biometric project. A systems integrator may be sourcing a small batch for a proof-of-concept, while an OEM may need a larger quantity after design validation; these two situations can have different sourcing, scheduling and commercial requirements. FourTeck.com can help buyers present the correct model, quantity, delivery destination and project context when requesting a quote. Where a module is being used as a replacement, sharing the old model and host interface can also help identify whether a direct substitution is realistic or whether engineering review is needed.
Regional Availability for GCC and Africa Projects
FourTeck.com also supports business technology inquiries for selected projects across the GCC and Africa region. Procurement teams working in Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Kenya, Uganda and other markets can contact the relevant FourTeck inquiry channel to discuss product sourcing, quantity requirements and delivery options. Availability, warranty handling and logistics can vary by destination, so these details should be confirmed for each order rather than assumed from a UAE inquiry.
For cross-border project supply, share the final destination, quantity, required schedule and whether the order is for engineering samples, spares or production deployment. Biometric modules can be small components within a much larger project, but delays caused by an incorrect interface, untested replacement or missing development material can affect the whole rollout. Regional procurement teams should therefore align sourcing with the technical validation process.
Useful FourTeck regional resources include FourTeck.com, FourTeck Kenya, FourTeck Uganda, FourTeck Africa and FourTeck Kuwait. Contact the appropriate channel to confirm country-specific commercial and delivery requirements.
Other ZKTeco Options Buyers May Consider
The right biometric device depends on whether the project needs an embedded electro-silicon module, an embedded optical module, a finished USB scanner or a different capture area. The following ZKTeco options can be useful comparison points during technical selection. Final model suitability should be checked against the application rather than chosen only from size or product family.
ZKTeco Bio30S
A related electro-silicon embedded fingerprint module with a larger listed capture area. Useful when engineers want to compare closely related module options.
ZKTeco SLK20M
An embedded optical fingerprint module for projects that prefer an optical sensor approach and want to compare sensor technology and physical integration.
ZKTeco SLK20S
Another fingerprint module option worth considering when the project requires a different module architecture or sensor characteristics.
ZKTeco ZK9500
A finished USB fingerprint scanner for buyers who need a desktop peripheral rather than an embedded module that requires custom enclosure and hardware integration.
For a new product design, ask engineering to compare sensor type, liveness requirements, capture area, interface, SDK support and mechanical footprint. For a replacement project, compare pinout and software behavior first. FourTeck.com can help buyers narrow the commercial options once those project constraints are understood.
Why Business Buyers Contact FourTeck.com
Buying an embedded biometric component is different from buying a boxed office peripheral. The commercial part number may be straightforward, but the buyer still has to align development, compatibility, quantity and project timing. FourTeck.com supports this procurement process with practical pre-sales assistance rather than treating the module as an isolated commodity.
Help with product inquiries, quantity planning and sourcing discussions for business and project requirements.
A structured way to review interface, application, replacement and related model questions before quotation.
Commercial follow-up based on model, quantity, destination and current supplier conditions rather than an unverified fixed stock claim.
Support for discussing delivery requirements once availability, destination and order conditions are confirmed.
Help clarifying the warranty handling applicable to the quoted supply route and specific order.
Assistance comparing related ZKTeco options when the required form factor, sensor type or finished-device format changes.
For procurement teams, this means the quote request can include the engineering context that matters. For technical teams, it means commercial discussions are less likely to proceed with the wrong form factor or interface assumption. FourTeck.com does not replace the system integrator’s design responsibility, but it can help connect the product selection and purchasing stages more clearly.
Frequently Asked Questions
What is the Bio31S used for?
It is used as an embedded fingerprint recognition component inside another product or system. Typical project types include custom access terminals, attendance devices, kiosks and OEM equipment that require fingerprint enrollment and matching. It is not a complete access-control system on its own, so the host device must provide application logic, identity management, power, mechanical mounting and the surrounding user workflow.
What fingerprint functions are supported?
The published feature set includes fingerprint enrollment, image capture, template extraction, 1:1 comparison, 1:N comparison and template deletion. This covers the core biometric steps needed for verification and identification workflows. The final behavior still depends on the host application, which must manage user records, permissions, enrollment authority, error handling and any connection to a wider identity or access system.
Does the module support liveness detection?
No. The vendor specification lists fingerprint liveness detection as not supported. Buyers with an anti-spoofing requirement should treat this as a key product-selection factor. A different sensor, another biometric technology or multi-factor authentication may be more appropriate depending on the project’s threat model and security policy.
What communication interfaces are available?
USB 2.0 and UART are listed. The UART interface operates at 115,200 bps with 3.3 V TTL signalling. Engineering teams should choose the connection method that best matches the host controller and software environment, then validate voltage levels, connector pinout, drivers or SDK support and recovery behavior during prototype testing.
Which fingerprint template formats can it use?
The module lists ZKFinger V10.0, ISO 19794-2 and ANSI-378 template support, with ISO 19794-2/4 and ANSI-378 standards support also noted by ZKTeco. If a project needs to exchange templates with an older or third-party system, interoperability should be tested with the exact devices and software rather than assumed from the standards names alone.
Can FourTeck.com help with model and integration selection?
Yes. FourTeck.com can help buyers review whether an embedded module is the correct device class, discuss interface and application requirements, and compare related ZKTeco options before quotation. Detailed software development and product engineering remain the responsibility of the project team, but better pre-purchase information can reduce the chance of selecting the wrong component.
How do I request a business quotation?
Use the FourTeck.com contact form and provide the model, quantity, delivery destination and expected project schedule. For a more useful response, also mention whether the order is for a prototype, replacement, spare stock or production build, plus the intended USB or UART interface and any compatibility constraint. Commercial availability and warranty details can then be confirmed for the requested supply.
Is current availability guaranteed?
No fixed availability is claimed on this page. Supplier status can change with quantity, timing and market conditions. FourTeck.com can check current sourcing options when a buyer submits a quotation request. Production projects should avoid relying on an unconfirmed availability assumption and should plan procurement after the engineering design has been validated.
What warranty information should buyers confirm?
Warranty handling should be confirmed with the specific quote because it can depend on the supply route and order terms. Businesses should ask how defective units are handled, what information is required for a return request and whether the warranty arrangement is suitable for a production deployment. Keeping a small tested spare quantity may also be sensible for critical field equipment.
Can businesses request bulk or project supply?
Businesses can request quotations for larger project quantities, but the order should follow technical validation. For a new design, teams usually benefit from testing samples first, validating the enclosure and software, then confirming the production quantity and schedule. Share forecast volume and required dates with FourTeck.com so the commercial discussion can reflect the project stage and current supplier conditions.
Need Help Matching the Module to Your Project?
Share your intended application, quantity, host platform, interface choice and delivery requirement. FourTeck.com can help review the product fit, discuss related ZKTeco options, confirm current availability and prepare a business quotation for your UAE project.
