Zktime 50 Attendance Managment System Ver 485l — Updated

Previous versions used basic MD5 hashing for data transfers. Version 485L introduces AES-256 encryption for communication between the terminal and the PC, preventing data tampering and man-in-the-middle attacks.

If you are upgrading from a previous version: zktime 50 attendance managment system ver 485l updated

| Feature | Ver 480 | Ver 485L (Updated) | |---------|---------|---------------------| | Max Users | 1,000 | 1,500 | | Log capacity | 50,000 | 80,000 | | RS485 distance | 100m (without repeater) | 200m (error-corrected) | | Firmware update method | Serial only | USB + Serial | | Mobile app support | No | Yes (via ZKBioAccess bridge) | Previous versions used basic MD5 hashing for data transfers

| Symptom | Probable Cause | Solution | |---------|----------------|----------| | “RS485 Timeout” | Wrong Device ID or baud rate | Check dip switches on device & software matching. | | Fingerprint not matching | Dry/sweaty finger | Clean sensor; re-enroll using improved “Ver 485L” quality threshold. | | Device beeps but no log saved | Memory full or clock error | Download logs via software → clear memory. Sync time from PC. | | “Invalid Card” | Card format not supported | Use EM4100 or Mifare Classic 1K. Re-enroll card in device. | | | Fingerprint not matching | Dry/sweaty finger

The ZKTime 50 is a biometric and RFID-based time-attendance terminal designed for small to medium-sized enterprises. With the Version 485L (Updated) firmware and software suite, the system brings enhanced stability, faster verification, and improved data synchronization over RS485 networks.

This updated version focuses on reliability in harsh environments, offline operation, and seamless integration with third-party payroll systems.