... voltage: 8-36V/DC (limit voltage 100V)Resistance to power source reverse connect: ≥80VWorking current: average 110mA @ DC 12V ... area replenish reportEmergency alarm, mute listeningGPS open circuit alarmMain power lost alarm, battery cell low voltage alarmEnter limit area ... Device, GPS Antenna, GSM Antenna, TTS voice report device,Power Supply cable, Panic Button, Lock Vehicle relay, Monitor Mic. ...