Feature: 1. Flame Retardant PC Material: The adjustable over under voltage protector is constructed from excellent PC material with flame retardant properties, ensuring enhanced safety and reliability for electrical devices. Equipped with over voltage guard, under voltage guard, and voltage display (voltage measurement), it offers comprehensive safeguards for electronic appliances. 2. Customizable Guard Settings: Users can manually adjust the over voltage, under voltage, and over current guard values to provide tailored guard for connected devices. This feature prevents additional damage to appliances caused by frequent fluctuations in voltage, offering a secondary protective measure for sensitive electronics. 3. Delayed Power On Function: The over and under voltage current protector includes a delayed powe on feature that automatically restores power supply 1 second to 999 seconds after the voltage stabilizes. This functionality prevents sudden power surges or disruptions that could potentially damage connected devices, ensuring a gradual and stable power supply. 4. Multifunctional: The over under voltage current protective device offers multiple reset modes, fault diagnosis capabilities, and the option to restore the factory settings, providing added flexibility and convenience for users to manage and troubleshoot potential issues effectively. This feature enhances the overall functionality and usability of the device. 5. Secure And Reliable Power Supply: With built in voltage guard mechanisms and advanced features, the over under voltage protector delivers a secure and reliable power supply for various electrical appliances, safeguarding them against voltage fluctuations and ensuring optimal performance and longevity. This protector is an essential tool for maintaining the stability and safety of electronic devices in various settings. Specification: Item Type: Over Under Voltage Protector Model: LT1-63VA Material: Flame Retardant PC Working Voltage: AC220V Rated Current: 63A Overvoltage Adjustable Range: AC130-300V Undervoltage Adjustable Range: AC80-210V Reset, Extension Time: 1-999s Installation: 35mm Standard Guide Rail. Package List: 1 x Over Under Voltage Protector