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.