1. TCP/IP communication. 2. Two communication protocols: RS-485 and Wiegand. 3. Supports storing 100,000 user and 500,000 card-swiping records. 4. Supports multi-door interlock, multi-user unlock, anti-passback, and remote unlock. 5. Supports reader tamper alarm, intrusion alarm, unlocking timeout alarm, duress alarm, invalid card exceeding threshold alarm, and incorrect password alarm. 6. Supports built-in RTC, manual time fixing, and automatic time fixing. 7. Data can be saved permanently in case of power failure; supports online upgrade. 8. Power supply through storage battery(Default does not include storage battery, and the reserved storage battery space is 153.5mm*117.45mm*75mm). 9. Supports watchdog mechanism to ensure the operation stability. 10. Compatible with DSS Pro and SmartPSS AC. 11. Applicable to parks, high-end office buildings, financial buildings, insurance buildings, schools, factories, venues, CBD business centers, high-end residential areas, high-level government departments, maritime safety bureaus, etc.