Product information:

Conversion time: ≤ 0.5 seconds
Monitoring voltage: AC150v-400v50～60Hz (high voltage resistant design of this product can be used for 220 utility, can also be used for 380v three power between any two intended phase fire line, (using this product two shared, can form a three-phase four-wire phase loss alarm, very simple, two alarms a total of four lines, respectively, connected to the three-phase fire line and zero line can be, in no particular order)
Alarm volume: 110-120 decibels (sound size and some electric car alarm sound size is similar)
How to use: Connect the alarm to AC 220V (or AC 380v) power, turn on the power switch to enter the working state.
Automatic charging: Built-in trickle automatic charger, both ordinary batteries and rechargeable batteries can be used.
Working environment: Temperature -30℃～＋60℃, relative humidity≤85% RH
Battery life: standby state ordinary battery ≤ 2 years, rechargeable battery ≤ 10 years (standby state when the battery is not power consumption) packaging has changed randomly sent

Features:
Prevent thieves from cutting off the power supply for theft and other crimes.
Power supply under normal conditions! When the power is suddenly cut off/blackout, the alarm immediately alerts people with an alarm sound (the switch can be turned off to terminate the alarm)
When the power supply is restored, the alarm is terminated

Packing list:

Power Failure Alarm*1

Product Image: