Feature: 1. Good Protection: Can offer overload protection, short circuit protection, over voltage protection, under voltage protection, leakage alarm, etc. 2. Test to Display: Supports digital display, the over under voltage protector can show the working voltage, real time residual current value, etc. 3. Wide in Utility: Allows for flexible utilization in home, market, hotel, office, power transmission, industrial equipment, mechanism and so on. 4. Adopting the PC: The casing is mainly made of flame retardant PC material, which is not likely to break and very durable for long term using. 5. Easy to Install: Comes with a compact size and a light weight as well, the the voltage protective device is very convenient to wire and install. Specification: Item Type: Over Under Voltage Protector Material: PC Current Setting Range: 1A~63A Delay Time: 1-300s. Package List: 1 x Over Under Voltage Protector