The ZKTeco C3-400 Plus door access control panel is an IP-based controller running Linux OS, with 4 access point capacity, supporting 100,000 card users and 100,000 dynamic QR codes, TCP/IP, RS-485 (ZKTeco RS-485 / OSDP) and Wiegand (W26/W34/W66 format) communication, compatible with ZKBio CVAccess software.

ZKTeco's C3 Plus series is an IP-based controller providing RFID card and dynamic QR code authentication for access control solutions. The C3 Plus series includes three models: C3-100 Plus, C3-200 Plus, and C3-400 Plus. This series is designed for small and medium-sized businesses and can handle up to 100,000 multi-technology card users and 100,000 dynamic QR code transactions.
Key Features
- Access point capacity: 4
- Multiple authentication methods: RFID Card/Dynamic QR Code/Password
- Optimized capacity for small and medium-sized businesses. Supports 100,000 QR Code capacity and 100,000 RFID card capacity
- Features ZKTeco's RS-485 and OSDP (Version 2.1.7) protocols for connecting card readers and is compatible with ZKTeco QR code readers such as QR50, QR500, and QR600
- Highly flexible with a Wiegand interface (Input) for integration with third-party card readers equipped with a Wiegand interface (Wiegand W24/W34/W66 format)
- Supports the EX0808 I/O expansion board with 8 inputs and 8 outputs (via RS-485 connection)
- Supports access control software push protocol and is compatible with ZKBio CVAccess
- Data storage encryption using AES 256-bit algorithm
- AES 128-bit algorithm encryption to ensure secure communication between the controller, readers, and I/O expansion board
- Supports HTTPS / TLS1.2 protecting communication between the server and web client

Suitable Applications
- Small and medium-sized business access control
- Multi-door systems (up to 4 access points)
- Third-party reader integration via Wiegand
- RFID card and dynamic QR code authentication


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| Model | C3-400 Plus |
|---|---|
| Operation System | Linux OS |
| Access Point Capacity | 4 Access Point |
| Reader Capacity | 8 * RS-485 Readers (ZKTeco RS-485 / OSDP), 4*26 / 34 / 66-bit Wiegand Readers |
| IO Expansion Board Capacity | 8pcs EX0808 (RS-485 connection) |
| User Capacity | 100,000 |
| Card Capacity | 100,000 (1:N) (Standard) |
| QR Code Capacity | 100,000 (Static QR Code / Dynamic QR Code) |
| Transaction Capacity | 500,000 (Standard) |
| Number of Inputs | 4 * Exit Button, 4 * DoorStatus, 4 * AUX Inputs or 64 (with 8pcs of EX0808 IO expansion board) |
| Number of Outputs | 4 * Form C Relay orLock, 4 * Form C Relay for Aux Output or 64 (with 8pcs of EX0808 IO expansion board) |
| Max. Card Length | Supports up to 66 bits Card Length |
| QR Code | QR code, PDF417, Data Matrix, MicroPDF417, Aztec scanning in third-party development projects. Dynamic QR codes on the ZKBio CVAccess mobile application. |
| Communication | TCP / IP * 1; RS-485: ZKTeco RS-485 / OSDP *1; Wiegand (Input) * 4; USB: Type A (USB Drive Only) * 1; Aux Inputs * 4; Aux Outputs * 4; Electric Lock * 4, Door Sensor * 4; Exit Button * 4; Alarm * 4 |
| Standard Functions | Webserver, Upto 14-digit User ID, Access Levels, Access Groups, Holidays, Anti-passback, Anti-tailgating, Linkage, Global Linkage, Multiple Verification Methods |
| Access Control Interface | Wiegand (Card Reader) RS-485 (RS-485 Card Reader / QR Code Reader) |
| Power Supply | 9.6V – 14.4V DC |
| Operating Temperature | 0℃ to 45℃ |
| Operating Humidity | 20% to 80% RH (Non-condensing) |
| Dimensions (mm) | 215.88 mm*99.14 mm*19.3 mm(L*W*H) |
| Gross Weight | 0.357 Kg |
| Net Weight | 0.252 Kg |
| Supported Software | ZKBio CVAccess |
| Installation | Supported Wall-mount with Metal Enclosure (Optional) |
| Enclosure (Optional) | Size: 350 mm*90 mm*300 mm (L*W*H); Material: SPCC steel; Power Supply Unit: input 110V~240V AC, output 12V 4A+1A DC; Backup Battery: Space reserved [Recommended Backup Battery size: 151 x 94 x 65 mm (L*W*H)]; Gross Weight: 3.56Kg |
| Certifications | ISO14001, ISO9001, CE, FCC, RoHS |
| Factory ID | AC02-C14H-U10 |