Smart Plug

Automatically detects High Low voltage thresholds and protects appliance connected to it By isolating that harmful power reaching to your appliance. Thus Smart Plug prevent damage to electrical and electronic equipment / appliances from power fluctuations, specifically over and under voltage levels of long duration. When the mains power supply fluctuates outside preset tolerances (nominally 170 and 270V) the power to your equipment is disconnected by Smart Plug. visit: http://www.thuse.net/products/smart-plug6-amp-for-refridgerator/