F21 Fingerprint time atten and terminal | ZK


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F21 Brochure

User Manual

Quick Start Guide

Installation Guide


Fingerprint time atten and terminal


F21 is the first time atten and terminal applying the most advanced SilkID technology. It not only possesses outstandingly high identification rate towards dry, wet and rough finger, but also provides the utmost security by its live finger detecting capability.as well as photo taking function which enables attendance photo and Photo ID(optional).

In addition, with the brand new ZMM220 hardware platform, its clock rate can attain 1.2 GHZ. Such speedy hardware platform and fingerprint algorithm greatly enhance the speed of fingerprint verification.


• 2.4-inch TFT color screen

• SilkID fingerprint reader with living object detecting function

• Multiple Verification Modes: Multi-verification methods (card is optional) providing user various choices

• Full Features: Anti-passback,  interface for 3rd party electric lock, door sensor, exit button, alarm and doorbell

• Camera Function: record photo, photo ID (optional)

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

• Wireless door bell (Optional)

Technical Specifications

Display2.4-inch TFT LCD Color Screen
Fingerprint Capacity3000
Card Capacity5000(Optional) ID or mifare card
Transaction Capacity100,000
SensorSilkID Sensor
Algorithm VersionZKFinger V10.0
CommunicationRS232/485, TCP/IP, USB-host
Interface3rd Party Electric Lock, Door Sensor, Exit Button, Alarm, Doorbell
Wiegand SignalInput, Output, SRB
Aux. Input1ea for linkage function
FunctionsDST, Automatic Status Switch, Anti-passback, Scheduled-Bell, Printer & Wireless door bell (Optional)
Power Supply12V DC, 3A
Operating Temperature0 °C~45 °C
Operating Humidity20%~80%
SDK and softwareStandalone SDK, ZKAccess 3.5 software
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