Adjustable Voltage Regulator: 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) Automatic Induction Protection: The surge protector outlet protects your electrical equipment from voltage spike, momentary surge, voltage fluctuation, and brownout by interrupting the current when the voltage is too high or too low. When the voltage exceeds the limit, it will automatically cut off the power to prevent the damage to the appliance due to low or high voltage All-Round Safety: The wall surge protector can take full care of your home appliances. The shell is made from PC flame retardant material, which reaches the experimental standards of level test of UL94-5VA. And, the small and wall-mountable power pl