1. Adjustable protection parameters You can adjust the overvoltage and voltage values of the voltage protector socket according to the actual needs of the household appliance. Overvoltage protection: 230-300V adjustable (standard: 270V), undervoltage protection: 140-210V adjustable (standard: 170V). 2. Easy installation Adopting plug and play design, it is convenient and quick to use. It can be directly installed on the refrigerator to protect the electrical system from overvoltage, undervoltage and other impacts. The protector can also be used as a socket for daily electrical connections. 3. LED display screen You can clearly and intuitively understand the working status of the appliance on the LCD screen, update it in real time, and easily operate the buttons. If the voltage is not accurate, you can correct the large protective plug between -20V and 20V. 4. Intelligent protection function The smart socket is equipped with a 16A magnetic relay, which can withstand the impact of high current. When there is an overvoltage or undervoltage fault in the circuit, it can instantly cut off the power supply and protect the electrical equipment from damage. 5. Widely used Equipped with a safety protection door to prevent fingers or small objects from being inserted and contact hazards, and to prevent children from accidentally inserting it; It can be widely used in equipment such as refrigerators, air conditioners, hot water kettles, rice cookers, washing machines, televisions, etc. AC220V 16A Voltage Current Protector Overvoltage and undervoltage sockets protect your household appliances. When overvoltage or undervoltage or overcurrent faults occur in the line, the power supply can be cut off instantly to protect the electrical equipment from damage. Overvoltage Range: 230-300V (standard 270V) Overvoltage Range: 140-210V (standard 170V) Socket Specification: EU Mouth Rated Voltage: 220VAC Rated Current: 16A Current Range: 1-16A Recovery Delay Time: 1-500S Power Consumption: 2W