Feature: 1. PC Material: Made of PC material, this voltage protective device is flame retardant, impact resistance, weather resistance, and not easy to deform. 2. Safe to Use: With overvoltage protection, undervoltage protection, unstable voltage protection and voltage display functions, this voltage protective device is safer and more reliable to use. 3. Auto Recovery: After the voltage is stable, the voltage protective device will be automatically restored after 1S to 600S. 4. Digital Display: The voltage protective device has a clear screen with 2 data display, so people can also use it as a voltmeter. 5. Adjustable Values: You can manually adjust overvoltage, undervoltage and overcurrent protection values to better defend your devices. 6. Additional Functions: This voltage protective device has the functions of reset mode selection, fault inquiry, and factory reset. Specification: Item Type: Voltage Protective Device Material: PC Flame Retardant Current: 1-63A Undervoltage Protection Value Range: 140V-210V Rated Frequency: 50/60Hz >U and