the surge protector can protect the appliance work under the stable state,when the voltage is to ohigh or too low,the protector will cut off the voltage automaticlly,when the voltage recove the stable,the protector will start again after the 3-5mins later.
Surge protector
KAB-10A-C
110/10A
OVER VOLTAGE:138V
UNDER VOLTAGE :92V
DELAY TIME:3-5MINS