Features:
Power indicator: The power supply status of the grid can be seen at a . Alarm mode: It can whistle alarm when the grid is cut off or the power supply cable is cut, until the power is restored. High voltage resistant design: The professional circuit design can work at 260V for a long time, even if the grid voltage exceeds the standard in the middle of the night, it is not easy to damage. Monitoring voltage width: AC175V ~ 265V, a wider range of applications, not only for towns, but also for remote villages where power supply voltage is extremely unstable. Automatic charging: Built-in trickle automatic charger for both regular and rechargeable batteries. Battery life: Normal battery ≤ 2 years in standby state, rechargeable battery ≤ 10 years. Battery undervoltage alarm: Prevents false alarms caused by battery failures not being discovered. Replacing the battery: The drawer type battery cover switch is convenient and can be easily replaced.

Specifications:
Condition: Brand New
Material: ABS
Color: Shown as picture
Battery model: DC9V (1 GF22 battery not included)
Monitoring voltage: AC175V ~ 265V.
Working voltage: DC9V (1 GF22 battery is not included).
Alarm Volume: ≥115 decibels.
Working environment: temperature -30°C ~ +60°C
Relative humidity: ≤ 85% RH.
Package Weight: Approx.60g/2.1oz

Package List:
1 * Power Off Alarm Sensor (Battery is not included)