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voltage regulator
It is an voltage protection which prtects and extends the service-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 our normal voltage.
Green lamp means voltage is normal, when green lamp is cut off and red lamp works it means the voltage is higher or lower
It can use in very country which the voltage is not so steady.
voltage regulator