Automatic Voltage Protector Socket AC 220V Adjustable 16A Power Surge Protector EU Plug Socket Voltage Safe Refrigerator Protect white.Welcome to my store, I hope you like it! High and low voltage protection sockets User Manual High and low Voltage protectors are widely used to cut off the power supply of electrical appliances in unstable power grid conditions, timely protect electrical equipment, and extend the service life of electrical appliances. 1. LED indication 1.R LED ON-VgPrtecn Sa, 2