Automatic Induction Protection: Protect your electrical devices by interrupting the current flow from voltage spikes, instant surge, lightning strikes,voltage fluctuation, brownout, and that voltage which are too high or too low. When the voltage exceeds the limit, it will automatically cut off the power to prevent damage to the appliance due to low or high voltage. All-Round Safety: The shell is made from PC flame retardant material, which can reach the experimental standards of level test of UL94-5VA. It can take full care of your home appliances. The small and wall-mountable power plug converts any standard wall outlet into a surge-protected socket with no need for extra cords with its direct wireless plug-in design. Digital Display Function: You can see the current working status clearly even at a long distance. Digital display of current grid voltage value and delay state time. LOP indicates that the product is currently under low voltage protection and HIP indicates that the product is currently under high voltage protection. Long press "SET" key to display the remaining repair time. Adjustable Voltage: The minimum and maximum voltage capacity of the protector is adjustable. It can be adjusted when the product is powered on. Press the "SET" key to adjust the high/low voltage protection value and delay value of the product through the "+" key and "-" key according to your needs. (Adjustable position is at the side) Applicable Equipment: The voltage (surge) protector suits for air conditioner, refrigerator,washer,water heater and any home appliance whose power is less than 1800W