purpose and scope of application: AC220V applicable to
power failure alarm device, 50Hz single-phase circuit as a power supply, circuit outage alarm. Widely used in industrial and mining enterprises, institutions, substations, telecommunications room, hospitals, farms and so on. As a power outage alarm reminder products. This product volume of
; the appearance generous, the installation and the usage is convenient and flexible; high sensitivity; intelligent alarm; excellent performance and reliable; alarm sound to 110-120 decibel.

the products installed in the duty room, in the power supply normal stop wires or malicious cut, the alarm will be issued in a timely manner audible alarm sound alarm, the personnel on duty to take timely measures to guard against. The characteristics of
alarm products:
- prevention of theft, the thief cut off the power of crime.
- in the power supply under normal circumstances! If there is a sudden cut off (power failure), the alarm immediately to the police to remind people. (termination of alarm switch can be closed,
) - to restore power alarm termination.
- conversion time: less than 0.5 seconds
- Power: 9V laminated battery

] the monitoring of voltage: AC150v-400v50 to 60Hz ( high voltage resistant design this product can for 220 power can also be used between any two 380V three electric fire, the two sharing can be composed of three-phase four wire phase lack alarm, very simple, two alarm consists of four lines are respectively connected in three-phase FireWire, and the zero line can be, regardless of order)

battery life: standby battery is less than 2 years, the rechargeable battery is less than or equal to 10 years. (standby power consumption of the battery is not )

- working environment: temperature - 30 DEG C ~ 60 DEG C, relative humidity is less than 85% RH