Feature: 1. Working Principle: The over undervoltage protector can ensure the safe operation of home appliances by automatically disconnecting the load side power when the voltage is too high or too low to prevent electrical appliances from burning and protecting the safety of electricity consumption. 2. Red and Green Indicators: The over and under voltage protection device's green indicator shows that the power is normally supplied. Red indicator light shows over voltage or under voltage. 3. Automatic Disconnection: When the power condition is unstable, the protection function of the over undervoltage protection device will be activated automatically. Once the voltage exceeds limited range of products, it will automatically cut off protecting the safety of electrical equipment and personnel. When the power supply returns to normal, the equipment will be re powered within 1 minute. 4. Modular Design: The automatic recovery overvoltage and undervoltage protection device meets modular design standards. The product circuit board is made of excellent electronic components for reliable performance. 5. Wide Application Range: Our overvoltage and undervoltage protectors are stable and reliable, suitable for achieving automated functions and applied in mass produced household electrical products. Specification: Item Type: Over Under Voltage Protector Material: Flame Retardant PC Working Voltage: AC230V 50Hz Rated Current: 63A Over Voltage Action Cutoff Value: AC270V±5V Under Voltage Action Cutoff Value: AC170V±5V Over Voltage And Under Voltage Cutoff: Less Than 1s Delay Time: 30-120S Mounting: 35mm DIN Rail. Package List: 1 x Over Under Voltage Protector Note: When connecting the product for the first time, you must wait for about 1 minute, after the red light is turned off, the product can work normally.