Key Features: Supports anti-passback function, multi-card function, first-person function, super-card and super-password function. Online upgrade function and online remote control of doors. Supports uploading alarm events. Supports RS-485 and Wiegand interfaces for card reader access. The Wiegand interface supports W26/W34 and is seamlessly compatible with third-party card readers with a Wiegand interface. Supports time synchronization via NTP, manually or automatically. Supports standby battery. Data can be permanently stored when the access controller is powered off. Technical Specifications: 4-Door Access Controller. Voltage Input: DC 12V/1A. Power Consumption: 100W. Processor: 32-bit. Memory: 32M. Communication: TCP/IP, RS-485, Wiegand (W26/W34). Capacity: 100,000 cards, 300,000 events. LED Indicators: Power supply status, communication status, and operating status. Card Readers: 8 Card reader (RS-485 interface) and 4 card readers (Wiegand interface) Input interface: 4x alarm input, 4x door contact, 4x exit button, 8x case input, 1x tamper alarm Output interface: 4x lock relay, 4x alarm Operating temperature: -20°C - 65°C Dimensions: 373 mm 345 mm 98 mm.