All Round Protection: The Wall surge protector provides complete protection for your home appliances. The enclosure of single surge protector is made of PC flame retardant material, which effectively prevents accidents caused by faulty circuits. The use of grounded three-pronged sockets complies with the necessary safety standards and regulations. Automatic Induction Protection: The refrigerator protector receptacle protects your electrical equipment from voltage spikes, momentary surges, voltage fluctuations and power outages by interrupting the current flow when the voltage is too high or too low. if the voltage is lower than 80V or higher than 150V, the red light is on, enter the voltage protection state, the socket has no power output. Delay Function: If the unit experiences a voltage fluctuation, the automatic voltage protector will protect the unit by providing an output until the voltage stabilizes.The 5 Minute Delay indicator will illuminate to notify the user. The unit will delay for 5-6 minutes to confirm that the voltage has stabilized so that the voltage can be re-established. LED Indicator: The surge protector plug has a built-in LED to indicate the surge protection status: Normal (output), high and low voltage protection indicator, delay indicator. Wide Range of Uses: The voltage protector socket switcher is suitable for air conditioners, freezers, ice machines, washing machines, ovens, microwaves, dishwashers, coffee makers, toasters, water heaters, fans, computers, and cell phones and other home and office equipment.