1. Adjustable Protection Parameters: You can adjust the overvoltage and undervoltage values of the voltage protection socket according to the actual needs of your household appliances. Overvoltage protection: 230-300V adjustable (default: 270V), undervoltage protection: 140-210V adjustable (default: 170V). 2. Easy Installation: With a plug-and-play design, it's convenient and quick to use. It can be installed directly 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: You can clearly and intuitively understand the working status of the appliance on the LCD screen, update it in real-time, and easily use the buttons. If the voltage is not correct, you can correct the large protection plug between -20V and 20V. 4. Intelligent Protection Function: The smart socket is equipped with a 16A magnetic relay that can withstand the impact of high current. When there is an overvoltage or undervoltage fault in the circuit, it can immediately cut off the power supply and protect the electrical equipment from damage. 5. Wide Range of Applications: Equipped with a safety 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, kettles, rice cookers, washing machines, TVs, 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 immediately to protect the electrical equipment from damage. Overvoltage range: 230-300V (default 270V) Undervoltage range: 140-210V (default 170V) Socket specification: EU socket Rated voltage: 220VAC Rated current: 16A Current range: 1-16A Recovery delay time: 1-500S Power consumption: ≤2W