The 9V battery power source power supply, static current <10uA, alarm current <12mA;

The low voltage reports to the police the function, after the battery voltage is lower than 6. 8V, sends out the prompt sound reminder user to change the battery;

Audio Alarm: ??85dB
Temp. Range: -10degreeC~+60degreeC
Humidity Range: ??95%RH(40degreeC)
Environmental condition
Protection area: Below the alarm apparatus installment 6 meters, protects the area is 60 square meters highly.