ZKTeco C3-400 Plus RFID Access Controller in Dubai, UAE
Build a more structured door-access system around a central networked controller. The C3-400 Plus is designed to manage four access points while supporting RFID credentials, password-based verification, and supported QR-code workflows. It combines TCP/IP management with RS-485/OSDP and Wiegand reader connectivity, dedicated lock and door-sensor interfaces, auxiliary I/O, large event capacity, and security features intended for professional access control projects. For buyers planning an office, warehouse, education, healthcare, retail, or multi-department installation, FourTeck.com can help align the controller with readers, locks, power, cabling, software, enclosure requirements, and the practical details needed before ordering.
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Quick Product Information
ZKTeco
C3-400 Plus
IP-based four-door access controller
Card, password and supported QR code
RS-485/OSDP and Wiegand
TCP/IP, webserver functions and ZKBio CVAccess support
Small to medium business access control projects
Contact FourTeck.com for current options
Dubai and UAE coordination available
Based on supplied package and applicable seller terms
Reader, lock, enclosure, power and accessory selection should be confirmed
Share door plan and reader requirements for quotation
Buyer Snapshot: Is This Controller a Good Fit?
Projects that need one central controller for up to four managed access points, with network management and multiple reader interface choices.
A single platform can coordinate locks, door contacts, exit buttons, readers, credentials, schedules, alarms, and event records instead of managing each door as a separate standalone device.
Confirm reader protocol, credential technology, lock type, power design, enclosure preference, QR requirements, cable distances, network availability, and how many doors need entry and exit readers.
Useful for controlled office zones, staff entrances, stock rooms, server or utility rooms, education facilities, clinics, warehouses, and other locations where policy-based entry matters.
The controller supports EX0808 I/O expansion through RS-485, but the required expansion boards, auxiliary devices, and project logic should be planned before procurement.
FourTeck can help convert your door schedule and device list into a clearer bill of materials so procurement teams can request the right controller package and compatible supporting components.
Product Overview
A professional access control system needs more than a card reader on the wall. It needs a controller that receives credential information, applies access rules, operates the correct lock, watches door status, records events, and communicates with the management platform. The C3-400 Plus fills that central role for four-door projects. It is an IP-based control panel intended for small to medium enterprise deployments and provides dedicated interfaces for four electric locks, four door sensors, four exit buttons, four auxiliary inputs, and four auxiliary outputs. This makes the controller a practical building block for projects where several doors must work under one coordinated policy framework.
Credential flexibility is another important part of its design. ZKTeco specifies support for card, password and QR-code authentication. Reader integration can use ZKTeco RS-485 or OSDP readers, while Wiegand inputs provide compatibility with many established reader installations using 26-, 34- or 66-bit formats. For projects moving from older reader wiring toward a more modern secured reader bus, this combination gives integrators options, although final compatibility still needs to be checked against the exact reader model, credential technology and software configuration.
The controller also carries substantial database capacity for a device in this class: ZKTeco lists 100,000 users, 100,000 standard cards, 100,000 QR-code capacity and 500,000 standard transactions. Those figures matter for sites that need a sizeable credential database or long event history before records are synchronized or archived. Built-in functions include access levels and groups, holidays, anti-passback, anti-tailgating, linkage, global linkage and multiple verification methods. These tools can support more disciplined access policies than a basic door-open relay approach.
For UAE buyers, the key procurement question is not simply whether the model controls four doors. The complete system must match reader type, locks, door contacts, request-to-exit devices, power supply, enclosure, network design, management software and any expansion I/O. FourTeck.com can help review these elements before quotation so a project buyer can distinguish between the controller board, an enclosure package and the other components needed for a working deployment.
Key Business Benefits
◆ Centralized Four-Door Control
Managing four access points from one panel helps an organization apply policies consistently across a small site or a defined building zone. Instead of treating each door as an independent device, administrators can coordinate credentials, schedules, events and control logic through the access control platform.
◆ Flexible Reader Integration
Support for RS-485/OSDP readers alongside Wiegand inputs gives project teams more freedom when selecting readers or modernizing an existing installation. This can reduce unnecessary replacement work, provided the chosen readers and credential formats are verified before ordering.
◆ Large Credential and Event Capacity
The listed database capacities can support organizations with many staff, contractors, visitors or credential records while retaining a substantial transaction history. Capacity headroom is useful where access control must scale without forcing an early controller replacement simply because the cardholder database grows.
◆ Policy-Based Access Decisions
Access levels, groups, holidays, anti-passback, anti-tailgating, linkage and multiple verification options let administrators design rules around business operations. These controls can support restricted areas, time-based access, controlled movement and response actions when the project is correctly configured.
◆ Better Security for Controller Communications
ZKTeco describes AES-256 protection for stored data, AES-128 protection for communications among controller, readers and I/O expansion boards, and HTTPS/TLS 1.2 for web communication. These features give security-conscious buyers stronger foundations than an unmanaged relay-only design.
◆ Expandable Auxiliary I/O
Support for up to eight EX0808 expansion boards can broaden the number of auxiliary inputs and outputs for projects that need additional monitoring or controlled devices. Expansion should be designed around the required logic rather than added after installation without a clear I/O plan.
◆ Clearer Procurement Planning
A four-door controller creates a defined starting point for the bill of materials. Procurement can then confirm readers, locks, power, enclosure, backup battery space, cabling and software requirements. FourTeck.com can help buyers structure this list before requesting commercial terms.
Product Highlights
Designed for a four-door control architecture.
ZKTeco RS-485 / OSDP reader support for entry and exit design.
Supports 26-, 34- and 66-bit Wiegand reader connections.
Supports networked controller communication and management.
Designed to operate with ZKTeco’s stated access control software platform.
Provides substantial standard event storage for access activity.
The important point is how these features combine. A buyer can connect the controller to a network, use multiple reader technologies, monitor door state, trigger locks, accept exit requests and build access rules around groups, schedules and verification methods. That makes the panel suitable for a managed system rather than a simple card-to-relay installation. The listed support for dynamic QR codes through ZKBio CVAccess also creates a route for projects that want mobile or temporary credential workflows, subject to reader and software configuration.
Before purchase, verify the exact package. ZKTeco lists the controller board separately and also describes an optional wall-mount metal enclosure. The optional enclosure specification includes an SPCC steel housing, power supply arrangement and reserved space for a backup battery of the recommended size. A quote should therefore state whether the requirement is board-only or package/enclosure based, because this affects what the installer still needs to supply.
Technical Specifications
| Specification | C3-400 Plus Details |
|---|---|
| Product Type | IP-based four-door access control panel |
| Operating System | Linux OS |
| Hardware | Single-core 1.0 GHz CPU, 128 MB RAM, 256 MB ROM |
| Authentication | Card / Password / QR Code |
| Access Point Capacity | 4 access points |
| Reader Capacity | 8 × RS-485 readers (ZKTeco RS-485 / OSDP); 4 × 26/34/66-bit Wiegand readers |
| User Capacity | 100,000 |
| Card Capacity | 100,000 standard |
| QR Code Capacity | 100,000 static / dynamic QR code capacity |
| Transaction Capacity | 500,000 standard |
| Inputs | 4 exit button, 4 door status, 4 auxiliary inputs; auxiliary I/O can expand with supported EX0808 boards |
| Outputs | 4 Form C lock relays and 4 Form C auxiliary outputs; expansion available through supported EX0808 boards |
| Standard Interfaces | 1 × TCP/IP, 1 × RS-485 ZKTeco/OSDP bus, 4 × Wiegand inputs, 1 × USB Type-A for USB drive, plus door and auxiliary interfaces |
| I/O Expansion | Up to 8 × EX0808 boards via RS-485 |
| Power Supply | 9.6 V to 14.4 V DC |
| Operating Temperature | 0°C to 45°C |
| Operating Humidity | 20% to 80% RH, non-condensing |
| Board Dimensions | 215.88 × 99.14 × 19.3 mm (L × W × H) |
| Board Weight | Net 0.252 kg; gross 0.357 kg |
| Supported Software | ZKBio CVAccess |
| Optional Enclosure | Wall-mount SPCC steel enclosure, 350 × 90 × 300 mm; PSU input 110–240 V AC, output 12 V 4 A + 1 A DC; reserved backup-battery space |
| Security Features | AES-256 stated for stored data, AES-128 stated for controller/reader/I/O communications, HTTPS/TLS 1.2 web communication |
| Certifications Listed by ZKTeco | ISO 14001, ISO 9001, CE, FCC, RoHS |
When choosing a configuration, start with the door schedule rather than the product name. A four-door project can still have different reader counts depending on whether each door requires entry-only reading or both entry and exit authentication. Eight RS-485 reader capacity can support a paired-reader design across four doors, while the four Wiegand inputs need to be considered differently. Then map lock type, door contact, request-to-exit device and any alarm or auxiliary functions. If additional monitored or controlled points are needed, determine whether EX0808 expansion is required and how it will be powered and wired.
Also confirm the physical environment. The controller’s stated operating range is 0°C to 45°C with non-condensing humidity, so the enclosure location should be selected accordingly. In hot or dusty plant areas, do not assume a standard indoor enclosure is suitable without checking the environmental design. For projects using QR credentials, verify the selected reader and ZKBio CVAccess workflow. For projects reusing older Wiegand readers, confirm actual format and credential compatibility before assuming that the existing hardware can remain in service.
Configuration and Buyer Guidance
An access controller is only one part of the installed system, so the correct purchase decision depends on how the doors will operate in daily use. A useful starting point is to prepare a simple door-by-door schedule. For each opening, identify the door name, reader position, credential type, lock type, request-to-exit device, door contact, emergency release arrangement, power source and any special rule such as anti-passback or multi-factor verification. This removes ambiguity when comparing the controller’s capabilities with the actual project.
Four doors do not always mean four readers. Entry and exit authentication can require more. Match the reader plan to RS-485/OSDP or Wiegand capacity.
Confirm RFID technology, password workflow, QR use, visitor process and whether existing cards must remain compatible.
Check electromagnetic locks, strikes or other hardware, current draw, release logic and the appropriate power supply design.
Plan future doors, auxiliary I/O, additional readers and management requirements before finalizing the initial panel count.
Record current cabling, reader interfaces, network points and control software so compatibility can be assessed realistically.
Clarify installation scope, configuration responsibility, warranty expectations, commissioning requirements and handover documentation.
When contacting FourTeck.com, share the number of controlled doors, whether authentication is required in one or both directions, the reader models or preferred credential type, lock hardware, enclosure preference, software environment and delivery location. If this is a replacement project, include the existing controller and reader details. With that information, the sales team can help identify the suitable package and avoid a quote that covers the controller but overlooks essential installation components.
Ideal Business Use Cases
Office Access Zoning
A company can use four controlled access points to separate reception, staff-only areas, finance or HR zones, meeting facilities or IT rooms. Central credential management helps administrators grant access according to role and schedule rather than issuing unrestricted physical keys.
Warehouse and Stock Areas
Warehouses often need controlled staff entrances, dispatch rooms, secure cages or inventory offices. Door sensors and recorded transactions can provide a better operational trail, while auxiliary logic can support wider security workflows when the project is designed correctly.
Education and Training Sites
Schools, colleges and training centers may need restricted faculty rooms, laboratories, administrative offices and equipment areas. Time schedules and access groups can help separate staff, service providers and approved users according to operational policy.
Clinics and Professional Facilities
Clinics and business service environments can apply controlled access to records rooms, staff zones, storage areas or technical spaces. The controller provides the policy and event layer, while the chosen credential and reader system determine how users authenticate at each door.
Retail Back-of-House Control
Retail operations may need restricted access to management rooms, stock rooms, cash-handling areas or staff entrances. A networked controller can make staff credential administration easier than relying on mechanical keys that are difficult to revoke when employees or contractors change.
Small Multi-Department Facilities
Where a site has four priority doors and expects centralized policy management, the panel can serve as a focused access layer. If more doors are planned, the project should account for additional controllers, network architecture and software licensing or management requirements as applicable.
The controller can also fit renovation projects where existing Wiegand readers are being reviewed alongside newer OSDP-capable readers. That does not mean every legacy reader, card or cable will automatically work. The value is that the panel offers both interface families, giving designers a practical path to assess retained hardware and planned upgrades. The final design should always be based on verified reader compatibility, cable condition, power calculations and the access control policy required by the site.
C3-400 Plus Four-Door Control Architecture
The practical strength of a four-door controller is not the number four by itself; it is the ability to make four openings part of one coordinated access control system. Each controlled door can use a lock output, door-status input and exit-button input, while the management software applies user permissions, schedules and event handling. This structure is useful for a small site that has a clear group of protected doors, such as a staff entrance, server room, records room and stock room. It is equally useful inside a larger building where four doors form one functional security zone.
Door monitoring adds an important layer. A card swipe that triggers a lock is only one event. A door contact can tell the controller whether the door actually opened or remained open, and configured alarm or linkage logic can support response to conditions such as abnormal door states. This is why buyers should include door sensors and locking hardware in the project discussion instead of treating them as accessories to decide later. Their wiring and operating logic affect commissioning.
The available auxiliary inputs and outputs extend the design beyond basic doors. Supported EX0808 modules can add more I/O when the project requires additional monitored points or controlled functions. However, expansion is most useful when the required behaviour is defined in advance. List every signal the system should monitor and every external device it should control, then map those requirements to available I/O. FourTeck.com can help buyers review this matrix before quotation so the controller selection reflects the full operating requirement rather than only the visible readers on the wall.
C3-400 Plus Reader Connectivity and Credential Choice
Reader selection often determines how convenient, secure and future-ready an access control system will be. This controller gives designers two main reader connection paths. ZKTeco specifies capacity for eight RS-485 readers using its RS-485 protocol or OSDP, and four Wiegand inputs supporting 26-, 34- and 66-bit formats. In a project using RS-485/OSDP readers, this can support reader positions on both sides of each of four doors. Wiegand planning is different because the number of physical inputs is four, so the exact entry/exit design must be mapped before hardware is ordered.
OSDP is particularly relevant to buyers planning a newer structured installation because it is a bidirectional reader communication standard and is commonly selected when teams want a more managed reader link. Wiegand remains important for compatibility with many installed readers. The presence of both interfaces does not eliminate compatibility work. The reader model, credential technology, output format, cable length, power requirements and desired authentication method still need validation. A MIFARE, EM, HID-compatible or other credential ecosystem, for example, should not be inferred only from the controller name; the chosen reader is a major part of the credential decision.
QR access adds another workflow. ZKTeco identifies dynamic QR support through ZKBio CVAccess and compatibility with its QR reader family. Businesses considering visitor passes, temporary credentials or mobile-driven entry should confirm the specific reader and software flow before purchase. The strongest buying approach is to define how each user type will authenticate—employees, contractors, visitors and administrators—then select readers and credentials around that policy. FourTeck.com can help translate those user journeys into a clearer controller and reader bill of materials.
C3-400 Plus Security, Event Control and Administration
Access control security depends on both physical devices and the way information is stored, transmitted and administered. ZKTeco states that the C3 Plus series uses AES-256 encryption for stored data and AES-128 protection for communication among the controller, readers and I/O expansion boards. It also lists HTTPS/TLS 1.2 protection for communication between the server and web client. These capabilities are useful foundations for buyers who want to move beyond simple unencrypted reader-to-relay systems.
Policy functions are equally important. The controller supports access levels, access groups, holidays, anti-passback, anti-tailgating, linkage, global linkage and multiple verification methods. In business terms, these functions can be used to define who may enter, where they may enter, when they may enter and what additional conditions should apply. Anti-passback can help enforce movement logic where the system design and reader placement support it. Linkage functions can coordinate events with other controlled outputs. Multiple verification methods can create a stricter authentication process for selected areas.
Administration should still follow the organization’s own security policy. Controller features do not automatically create a secure deployment. Network segmentation, strong administrator accounts, controlled software access, accurate time settings, credential issuance procedures, regular user reviews and proper event retention all matter. Buyers should decide who will own day-to-day access administration and how credentials will be added, changed and revoked. For sites replacing a legacy system, plan data migration and credential re-enrolment carefully. FourTeck.com can help procurement teams identify the product-side requirements while the customer’s security or integration team defines operational policy and commissioning responsibilities.
Questions Business Buyers Ask Before Selecting This Controller
A four-door access controller can look straightforward on a specification sheet, but successful deployment depends on reader count, credential type, lock hardware, software, power, cabling and access policy. The following buyer questions focus on the decisions that usually determine whether the controller fits the project as planned.
Can one controller manage all four doors in my office?
Yes, the model is designed for four access points. Each door can have dedicated lock, door-status and exit-button interfaces. The reader plan still matters: a door requiring authentication on both entry and exit may use two readers, so confirm whether RS-485/OSDP or Wiegand will be used and map reader quantity before purchasing.
Can I reuse existing Wiegand readers?
Possibly. The controller provides four Wiegand inputs supporting 26-, 34- and 66-bit formats, which can help with migration from many established reader systems. Reuse should not be assumed until the reader model, output format, power, credential technology and cable condition are checked. Existing cards also need to match the retained readers and planned software workflow.
When should I choose OSDP readers instead of Wiegand?
OSDP is a strong choice for new structured projects that want a bidirectional reader bus and a modern integration path. The controller supports up to eight ZKTeco RS-485/OSDP readers. Wiegand can remain practical when matching existing hardware. The correct choice depends on reader compatibility, wiring design, security requirements, budget and whether entry and exit authentication are required.
Does the controller support visitor QR codes?
ZKTeco states support for QR-code authentication, including dynamic QR codes through ZKBio CVAccess, with compatible QR readers. A visitor workflow should be designed around the selected QR reader, software configuration and how temporary credentials will be issued and revoked. Confirm those elements together rather than ordering the controller alone on the assumption that every QR reader will work.
Do I need the optional metal enclosure?
That depends on how the panel will be installed and what package is being quoted. ZKTeco lists an optional wall-mount SPCC steel enclosure with a power supply arrangement and reserved battery space. For a new installation, an enclosure can simplify physical mounting and protection, but confirm package contents, power requirements and battery planning before deciding.
What if I need more auxiliary inputs or outputs?
The base panel provides four auxiliary inputs and four auxiliary outputs, and ZKTeco lists support for up to eight EX0808 I/O expansion boards over RS-485. Expansion should be planned from the required event logic. Identify every extra sensor, alarm condition and controlled output so the integrator can calculate module count, power and wiring before installation.
Is the database capacity suitable for a growing company?
The standard specification lists 100,000 users, 100,000 cards, 100,000 QR-code capacity and 500,000 transactions. For many small and medium organizations this provides considerable headroom. Buyers should still consider how long event data needs to remain on the controller, how software handles records and whether future sites will use additional controllers under the same management environment.
What should I verify when replacing an older controller?
Document the old panel, reader models, credential formats, lock wiring, door contacts, exit devices, power supplies, network settings and management software. A replacement may require rewiring, reader changes, database migration or re-enrolment. The goal should be a verified migration plan, not simply matching the old system’s door count to the new controller’s door count.
What information will help FourTeck prepare a more accurate quote?
Share the four-door schedule, required reader quantity, reader protocol or preferred models, credential type, lock hardware, power and enclosure needs, QR requirements, expected user volume, auxiliary I/O requirements and delivery location. If installation or commissioning is part of the project, state that separately. Clear inputs reduce the chance of missing accessories or quoting an unsuitable package.
Business Requirements to Match Before You Buy
For a four-door office zone
A suitable option when four controlled doors need centralized policies, event records and network management. Confirm whether each door uses one reader or two and whether all doors share the same credential technology.
For organizations retaining legacy readers
Wiegand inputs can make the panel relevant to migration projects, but the existing reader format, cards, power and wiring must be confirmed. Do not treat interface compatibility as proof that every legacy credential will work unchanged.
For a newer OSDP reader design
The RS-485/OSDP reader capacity can support a modern four-door topology with reader positions on both sides where required. Plan cable routing, reader addressing, power and commissioning responsibility before rollout.
For visitor or temporary QR access
The controller can support QR-based workflows with compatible readers and ZKBio CVAccess. Buyers should define how temporary credentials are created, delivered, expired and audited before choosing readers and software configuration.
For installations needing extra control logic
Projects that depend on additional alarms, sensors or outputs can evaluate EX0808 expansion. Count the required I/O points and define the desired linkage behaviour so expansion hardware is sized intentionally.
For procurement teams comparing packages
Ask whether the quotation is board-only or includes the metal enclosure and power supply. Also identify readers, locks, exit devices, door contacts, credentials, battery and installation materials that may be separate line items.
What Buyers Should Check Before Purchase
A successful access control purchase is a system decision, not a controller-only decision. Before requesting a quote, establish the operating requirement and identify which parts of the existing environment must remain. This helps avoid common project gaps such as insufficient reader ports, incompatible credentials, missing power hardware, absent door contacts or an enclosure package that was assumed but not specified.
Controller and Package Fit
Confirm that four doors are enough for the current phase and that the quote identifies board-only versus enclosure package. If more doors are likely soon, decide whether to add further controllers or redesign the panel layout.
Reader and Credential Compatibility
List every reader model and card technology. For a new project, decide between RS-485/OSDP and Wiegand based on the selected readers and desired architecture. For replacement work, confirm what can genuinely be reused.
Power and Door Hardware
Calculate lock current, reader power and any auxiliary load. Confirm fail-safe or fail-secure behaviour, emergency release requirements, door contacts, exit buttons and whether battery backup is part of the design.
Software and Administration
Verify the ZKBio CVAccess environment, administrator responsibilities, network access and user onboarding process. If migrating, plan what happens to existing cardholder data and event records.
Installation Environment
Check the controller location against its published temperature and humidity limits, cable paths, network reach and enclosure needs. Outdoor or harsh-area installation may require additional environmental protection.
Commercial and Support Scope
Ask what is included in the quoted package, applicable warranty terms, delivery arrangement, configuration scope and installation responsibilities. Availability and support conditions can vary by supplier, quantity and package.
For project supply, share a bill of materials or door schedule rather than only a model number. FourTeck.com can review the request and help identify missing product-side details before commercial quotation. This is particularly useful for bulk orders or phased deployments, where consistency of readers, credentials, enclosures and power design can matter as much as controller price.
UAE Availability and Service Support
FourTeck.com supports business access control inquiries in Dubai and across the UAE with product selection, configuration review, quote assistance, delivery coordination and warranty guidance. Availability can vary according to the exact C3-400 Plus package, enclosure choice, supplier status, project quantity and the supporting readers or accessories required. For that reason, buyers should request a current quotation instead of assuming that a board-only listing and a complete packaged controller are commercially identical.
A useful inquiry includes the number of doors, reader layout, credential preference, lock hardware, power and battery requirements, software environment and any additional I/O. FourTeck can also help procurement teams identify whether the project needs compatible readers, QR readers, exit buttons, door contacts, locking hardware, enclosure components or related network infrastructure. If the controller is replacing an existing system, include photographs or model references for the current panel and readers so compatibility questions can be raised early.
Warranty handling depends on the supplied item, source and applicable commercial terms. Ask for the warranty details to be stated on the quotation, particularly for project orders. Delivery timing also depends on supplier availability and order scope; FourTeck.com can coordinate delivery planning once the configuration and quantity are confirmed. This approach gives UAE buyers a clearer procurement path without relying on unverified stock or lead-time claims.
Coverage for Business Projects Across the Emirates
Businesses in Dubai, Abu Dhabi, Sharjah, Ajman and other UAE locations can contact FourTeck.com for access control product inquiries, configuration guidance and quote support. A project can be a single office refurbishment, a warehouse security upgrade, a new commercial fit-out or a standardized deployment across several facilities. The supply discussion should include the delivery location for each phase, site-specific reader or door requirements and whether the same controller package is expected across all sites.
For multi-site projects, standardization can simplify procurement and future administration, but each location still needs a checked door schedule and physical installation plan. FourTeck.com can help buyers organize model and accessory requirements so purchasing teams have a consistent reference for commercial comparison and rollout coordination.
Regional Availability for GCC and Africa Projects
FourTeck.com also supports business technology inquiries for selected GCC and Africa markets through its regional platforms and inquiry channels. Organizations planning projects in Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Kenya, Uganda or other supported markets can share their access control requirement for sourcing and configuration discussion. Product availability, delivery options, commercial terms, warranty handling and project support can vary by destination, supplier status and local requirements, so regional requests should be reviewed individually.
For cross-border or multi-country projects, provide a consolidated bill of materials plus delivery destinations, target schedule and whether every site will use the same readers and credentials. Consistent hardware can simplify administration, but power arrangements, local installation practices and support logistics still need to be considered. FourTeck’s regional websites can help route inquiries: Kenya FourTeck, Uganda FourTeck, Africa FourTeck and Kuwait FourTeck.
Regional supply should be planned around the exact package and accessories rather than only the controller board. Readers, locks, power supplies, enclosures, batteries, credentials and software responsibilities can materially change the project scope. Confirm these items before final commercial approval.
Other Options Buyers May Consider
The C3 Plus family includes smaller controllers that can suit projects with fewer doors, while related access control readers and infrastructure complete the installed system. Choosing a smaller or larger architecture should follow the number of controlled openings, reader positions, authentication method and planned expansion rather than only initial price.
ZKTeco C3-100 Plus
A one-access-point model in the same series for smaller single-door requirements where the full four-door capacity is unnecessary.
ZKTeco C3-200 Plus
A two-access-point member of the same family for projects that need centralized control but only across two doors.
OSDP / RS-485 Access Readers
A relevant companion category when designing a newer reader bus or entry-and-exit authentication workflow.
Network Infrastructure
Managed access controllers depend on reliable network connectivity. Switches, structured cabling and protected network design may be part of the wider project.
If you are unsure whether a one-, two- or four-door controller is the right choice, provide the current door count plus the expected expansion over the next project phase. FourTeck.com can help compare a smaller controller footprint with a standardized four-door approach and identify the practical accessory requirements for each option.
Why Business Buyers Contact FourTeck.com
Technology procurement becomes easier when the supplier discussion starts with the business requirement rather than only the model number. FourTeck.com supports SMB, enterprise and project buyers by helping them structure product inquiries, review configuration details and request commercial terms based on the complete requirement. For access control, that means looking beyond the controller to the reader topology, credentials, door hardware, power, enclosure, software and rollout plan.
Help organizing product requirements for single items, project quantities and phased purchasing.
Assistance identifying the questions that affect controller, reader, power and accessory selection.
Commercial quotation based on the requested package, quantity and delivery requirement.
Planning delivery once the exact product configuration and commercial terms are confirmed.
Clarification of warranty terms applicable to the quoted product and source.
Support gathering compatibility information when an older controller or reader environment is being replaced.
This approach is especially useful for procurement teams that receive a technical request containing only a model name. FourTeck.com can help convert that request into a more complete commercial checklist so the final quote better reflects what the installer or IT/security team actually needs. To start, use the FourTeck contact page and include your site type, door count, reader preference, quantity and delivery location.
Frequently Asked Questions
What is the C3-400 Plus used for?
It is an IP-based access controller designed to manage four controlled access points. It connects readers, electric locks, door sensors, exit buttons and auxiliary signals while applying access permissions and recording events. It is suitable for organizations that want centrally managed access rather than separate standalone door readers.
How many readers can it support?
ZKTeco lists support for up to eight RS-485 readers using ZKTeco RS-485 or OSDP and four Wiegand reader inputs supporting 26-, 34- and 66-bit formats. The best reader layout depends on whether users authenticate only when entering or on both entry and exit sides of each door.
Can it use RFID cards and QR codes?
Yes. ZKTeco specifies card, password and QR-code authentication for the C3 Plus series, including dynamic QR workflows through ZKBio CVAccess with compatible QR readers. The exact reader model and credential process should be confirmed because the controller does not by itself determine the physical card technology or QR scanning hardware.
Does it come with a metal enclosure and power supply?
Package contents can vary. ZKTeco lists a wall-mount SPCC steel enclosure as an optional item and provides enclosure power-supply specifications and reserved battery space. When requesting a quote, state whether you need the controller board only or a packaged enclosure solution and ask for the included components to be listed clearly.
Which software is supported?
ZKTeco lists ZKBio CVAccess as supported software for the C3 Plus series. Buyers should verify the required software version, deployment method and any project-specific licensing or integration requirements before rollout, particularly when the controller will join an existing access management environment.
Can FourTeck.com help with configuration?
FourTeck.com can help review the purchasing configuration, including door count, reader type, credential method, enclosure requirement, power, expansion I/O and related accessories. Final installation programming and commissioning responsibilities should be clarified in the project scope so the buyer knows which services are included.
Is the controller available for business orders in the UAE?
FourTeck.com accepts product inquiries for Dubai and other UAE locations. Current availability depends on the exact package, supplier status, quantity and accessory requirements. Contact the sales team for a current quote rather than relying on a generic stock assumption or an overseas listing that may represent a different package.
What warranty should I expect?
Warranty terms can vary according to the supplied item, source and commercial quotation. Ask FourTeck.com to state the applicable warranty guidance with the quote. For projects, also clarify how warranty claims, replacement logistics and any installation-related responsibilities will be handled.
What should I send when requesting a quote?
Send the controller quantity, number of doors, reader quantity and interface, credential type, required QR workflow, lock type, power and enclosure needs, any I/O expansion requirement, software environment and delivery location. For a replacement project, include existing controller and reader model details so compatibility can be reviewed before pricing.
Need Help Building the Right Four-Door Access Control Package?
Send FourTeck.com your door schedule, reader preference, credential type, enclosure requirement, project quantity and delivery location. The team can help review product-side requirements, current availability, supporting components, warranty guidance and quotation details before you place an order.
