Time Attendance and Access Control Device - F21

F21 – Time attendance and access control device with advanced Z-ID sensor

F21 is a new generation time attendance and access control device from ZKTeco, highly praised for integrating modern Z-ID sensor technology – providing fast and accurate fingerprint recognition performance under various conditions. F21 not only possesses all professional access control features but also supports user and ID photo capture, enhancing safety and effective personnel management capabilities.

1. Modern Z-ID sensor technology – Super sensitive recognition

The F21 time attendance and access control device is one of the first devices equipped with the new generation Z-ID fingerprint sensor, capable of:

• Recognizing dry, wet, rough fingers

• Distinguishing real from fake fingers, helping to prevent forgery using fingerprints made from silicone, rubber, etc.

• Capturing user photos during time attendance (optional), providing image verification data

With the ZKFinger V10.0 algorithm, F21 ensures fast matching speed and high accuracy, suitable for businesses with a large number of employees and strict control requirements.

2. User-friendly interface – 2.4-inch TFT color screen

F21 is equipped with a 2.4-inch TFT LCD color screen, which clearly displays employee information, time attendance instructions, current time, and navigation functions. The interface is simple and easy to operate even for new users.

3. Large capacity – Optimal management for medium and large enterprises

• 3,000 fingerprints

• 5,000 proximity cards (ID or IC optional)

• 30,000 transaction records

The F21 is suitable for offices, factories, industrial parks, buildings, and educational institutions with frequent foot traffic.

4. Flexible Connectivity – Supports Wi-Fi, TCP/IP, and USB

The device supports various communication standards:

• Wi-Fi – For installation in locations where network cabling is difficult

• TCP/IP – Connects to LAN systems

• RS232/485 – Connects to peripheral devices

• USB-host – Upload/download data via USB

Additionally, the F21 supports Wiegand Input/Output for integration with other access control systems.

5. Smart Access Control – Enhanced Security

The F21 integrates full door control functions such as:

• Third-party electric lock control

• Door status sensor

• Exit button, alarm bell

• Auxiliary input for device linking

Extended features include:

• Anti-passback – Prevents card re-use, enhances security

• Automatic status change, Scheduled bell

• External printer connection (optional)

• Record query directly on the device

6. Professional Software Integration – Easy Remote Management

F21 supports management software:

• ZKBio Access – Modern, intuitive access control software

• PUSH SDK – Easy connection to HR and payroll software

• ADMS support – Remote device and time attendance data management via cloud platform (optional)

7. Slim, Compact Design, Easy to Install

With dimensions of 158.5 x 78.0 x 19.4mm, the F21 features an ultra-slim design, making it easy to mount on doorways, offices, security gates, etc., suitable for all working environments from offices to factories.

8. Wide Application – Ideal for Various Models

F21 is suitable for:

• Company offices, banks

• Schools, training centers

• Manufacturing plants, industrial parks

• Buildings, apartments, hospitals

• Chain stores, sports centers

9. Viet Pos – Authorized F21 Distributor, Comprehensive Technical Support

Viet Pos is proud to be a supplier of genuine access control equipment from ZKTeco. When purchasing F21 devices at Viet Pos, customers will receive:

 Free installation solution consultation
 Preferential dealer prices, project discounts
 On-site installation support and usage instructions
 Genuine warranty – nationwide technical support

Contact Viet Pos to get a quote for F21 and consult on the appropriate access control system for your business.