SF400 is an IP based fingerprint terminal with both Network and Standalone operation modes. It is connectible with ZKAccess 3.5 software for access control and time attendance management. With Wiegand output, SF400 is flexible to connect with ZK or any 3rd party controllers as a slave reader. Wiegand input configures two SF400 units to utilize Master & Slave solution to enable users verification at both entrance and exit. Anti-passback function is also enabled to maximize the security level. Auxiliary input interface allows SF400 to connect with an extra source, for instance, a smoke detector or emergency switch. Once the linkage function is enabled through the machine menu, the device generates an alarm signal and opens doors in case of emergency.

Product Image
Product image
Product image
Product image
Product image

Product Features

2.8-inch capacitive touch screen

Up to 24 user-defined schedules that can be activated on a daily bell alert (optional)

Prompt audio acceptance or rejection signals for valid or invalid fingers

Compact and lightweight, small size for 86mm (L) x 86mm (H) socket installation

TCP/IP or RS485 communication for various networking environments

Supports USB flash drive for offline data management

Built-in auxiliary input with enhanced flexibility to link with wired detector or emergency switch

Up to 15 multi-verification methods to enhance security level

Standard access control features such as Time zone, Holiday, A&C Group, Unlock combination etc

Duress Alarm offers effective protection against duress by threats

Tamper proof switch and multiple alarm outputs

Multi-languages display available on request

Technical Specifications




2.8 inch capacitive touch screen

Fingerprint Sensor

ZK Optical Sensor (500DPI)

Algorithm Version

ZKFinger VX10.0



Fingerprint Capacity


Card Capacity (Optional)

5,000 (EM/Mifare)

Records Capacity


Access Control Interface

Electric lock, Door sensor, Alarm, Exit button, Door Bell


DST, Automatic Status Switch, Record query, T9 input, 9 digit user ID, Anti-passback, Scheduled-Bell, Printer(Optional),ADMS(Optional) ,webserver(Optional)

Wiegand Signal

Wiegand input & output

Aux. Input

1ea for linkage function

Power Supply

DC 12V/3A

Operating Temperature

0 ~ 45°C (32°~113°F)

Operating Humidity

20 ~ 80%

Dimension(L x W x H)

105 x 105 x 32mm