This standalone comes with 9arms battery,that can be changed after two years of use,
Standalone Smoke Detector
Parameter:
Operating Voltage: 9V battery;
Standby Current: ≤10μa;
Alarm Current: ≤20mA;
Alarm Output: Sound& Flash alarm
Sound Level: 85dB/mStandalone Smoke Detector
Parameter:
Operating Voltage: 9V battery;
Standby Current: ≤10μa;
Alarm Current: ≤20mA;
Alarm Output: Sound& Flash alarm
Sound Level: 85dB/m