Reference: ART-ARC5402A-W-10-A35-C35
Manufacturer: Dahua
Alarm Security Kit > LAN, WiFi, PSTN for communication; > 28 wireless detectors+8 wireless keyfobs+4 wireless sirens+2 wired zones+1 alarm out+1 wired siren, 150m transmission distance(open space, no interference) > 4CH IPC surveillance > 30s voice message > RFID reader(arm and disarm) > 3.7V/1900mAh Li-ion backup battery up to 4 hours...