ZKTeco ZK F21 Fingerprint Time Attendance and Access Control Terminal

The ZKTeco ZK F21 is a state-of-the-art biometric terminal designed for both time attendance and access control applications. It is the first device in its class to incorporate ZKTeco’s advanced SilkID fingerprint technology, delivering high-speed and reliable identification even for dry, wet, or rough fingers. With a built-in live finger detection sensor, the F21 ensures top-tier security and prevents spoofing. It features a 2.4-inch TFT color screen and offers optional features such as attendance photo capture and photo ID, making it ideal for enterprises seeking a versatile and secure workforce management solution.

Product Features

Advanced SilkID Fingerprint Sensor

Equipped with a high-performance SilkID sensor that accurately recognizes live fingerprints and detects false inputs such as fake fingers or printed images.

Multi-Verification Options

Supports various identification methods, including fingerprint, password, and optional ID or Mifare card for flexible and secure user authentication.

Integrated Access Control Capabilities

Includes a complete set of access control interfaces compatible with third-party electric locks, door sensors, exit buttons, alarms, and doorbells.

Built-In Camera Functionality

Captures attendance photos and offers optional photo ID features for enhanced identity verification.

Auxiliary Input Support

Features one auxiliary input that can be linked to wired detectors or emergency switches, enhancing safety and customization.

Optional Wireless Doorbell Integration

Can be paired with a wireless doorbell for visitor notification, streamlining access point operations.

Large Capacity and Fast Transactions

Capable of storing up to 3,000 fingerprint templates, 5,000 optional RFID cards, and 100,000 transaction logs.

User-Friendly Display

2.4-inch color TFT screen displays real-time status, user photos, and navigation menus for simplified operation.

Product Specifications

• Display: 2.4-inch TFT LCD color screen
• Fingerprint Capacity: 3,000
• Card Capacity: 5,000 (Optional, supports ID or Mifare cards)
• Transaction Capacity: 100,000 logs
• Sensor: SilkID fingerprint sensor with live finger detection
• Algorithm Version: ZKFinger VX10.0
• Communication: RS232/RS485, TCP/IP, USB host
• Access Control Interface: Compatible with 3rd-party electric locks, door sensors, exit buttons, alarms, and doorbells
• Wiegand Interface: Input and output supported
• Auxiliary Input: 1 (for wired detectors or emergency switches)
• Functions: DST, automatic status switch, anti-passback, scheduled bell, printer, wireless doorbell (optional)
• Power Supply: 12V DC, 3A
• Operating Temperature: 0°C to 45°C
• Operating Humidity: 20% to 80%
• SDK and Software: Supports standalone SDK and ZKAccess 3.5 software