Standalone 4 door controller, maximum controls 4 RS-485 Network Reader (Reader IN/Exit button OUT): expandable to 255 sets

External connection of TCP/IP Converter for efficient remote transmission

Stores maximum 15,000 cardholder/events

Provides 50 sets visitor card with configurable check digits, duration, usage time & frequency

Black List to prevent unknown usage of lost card

Anti-pass back, Duress alarm

90% memory full warning

200 holiday schedules / 128 time schedules / 8 time conditional unlock door schedule

On-board lithium battery ensures normal system operation upon power outage

RTC (Real Time Clock) ensures accurate time regardless power outage

Watchdog function ensures system free from halting

CRC (Cyclic Redundancy Checker) hash function ensures data accuracy