... control , 4 RFID Reader wiegand26 Ports, SUPPORT 14 TTL INPUT SIGNAL , 8 RELAY OUTPU,RS232/485 interface , Can connect 4 RFID ... Reader , SUPPORT 8 TTL INPUT SIGNAL FOR SENSOR SUCH DOOR STATUS INPUT , 8 RELAY OUTPUT FOR ... cycle storing, no data losing when power cut4 LED display function.Performance parametersPower: AC220±15%Battery standby: 48 hours working timeEnvironment ...