Power Failure and Temperature Notification System
POWALERT is a plug in sensor module that monitors power failures and temperatures.
**Excludes the simcard
Specification: 
Size: 111*57*70mm (EU plug) 
Built-in temperature sensor range: -10C to +50C 
External sensor range: -30C to +100C  
GSM frequency: 850/900/1800/1900Mhz. 
LED: Power indicator-Blue, GSM indicator-Blue 
Plug type: EU plug. 
Working voltage: 110-230V 
Working environment: -10C to +50C