INTELLIGENT DUAL READER CONTROLLER – 12 VDC OR 24 VDC AT 500MA, SIZE ( 6 IN (152MM) W X 8 IN (203MM) L X 1 IN (25MM)H), (5 YEAR LITHIUM BATTERY OR 3 MONTHS FULL RUN) 6 MB STANDARD CARDHOLDER FLASH MEMORY, 50,000 OF EVENT MEMORY; SINGLE RS485 IO EXPANSION BUS, MAXIMUM OF 32 DEVICES; ON-BOARD ETHERNET; DUAL PATH CAPABILITY; TWO ON-BOARD READER PORTS, , EIGHT INPUTS, FOUR OUTPUTS, CABINET TAMPER AND POWER FAULT INPUT MONITORS; LEGACY MODE FOR ONGUARD VERSIONS PRIOR TO 7.5; ROHS, CE, RCM AND UL294