EMS-HW50C Hardwired EMS-HW50C Surge & Electrical Protector

I have one in our 5ver for four years now and I have been very happy with the unit. it has shut down the incoming power twice because of low voltage. True that it was warm at the time because we could not have AC without power but that is the point of having the surge protector, it protected our air conditioning unit from low voltage.