Features: 
 

Monitor 3 phase loss voltage and single phase failure of the electric distribution network.
 

Can work with line-cut/movement/vibration sensors etc., The alarm will be triggered  when the power transformer is being damaged or moved.
 

Auto-dial 3 preset phone numbers, and SMS 3 preset mobile phone number.
 

Can work  with the monitor center through GSM network.
 

Can program the alarm host and inquiry its status by SMS demand.
 

Can set the time to report  the communication status of alarm host regularly.
 

Aluminum Die-casting shell, waterproof, anti-corrosion, fireproof, strike preventing,suitable for field work.
 

Power-off protection. When the external power supply is damaged or the power is off, the system can work with a backup battery.