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 ProtectorMaterial: PCCurrent Setting Range: 1A-63ADelay Time: 1-300s.Package List:1 xOver Under Voltage Protector