It is an voltage protection which prtects and extends theservice-lifeof connected electrical equipment (TV,Fridge,Computer,etc.)safe. 

When voltage is higher or lower than normal voltage, it cut off to protect the equipment safe.    

We can set the hither and lower voltage according to ournormalvoltage.            

 Green lamp means voltage is normal, when green lamp is cutoff and red lamp works it means the voltage is higher or lower

low  voltage:180v   high voltage:260v 

13AMPS   3500W 

France outlet and inlet