Feature: 1. AUTOMATIC ACTIVATION AND CUT OFF: The protection function of the over undervoltage protection device will be activated automatically when the power condition is unstable. Once the voltage exceeds limited range of products, it will be 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. 2. GUARD ELECTRICITY SAFETY: Our over undervoltage protector ensures the safe operation of appliances, prevents electrical appliances from burning and safeguards electricity safety. 3. MODULAR AND RELIABLE: This automatic recovery overvoltage and undervoltage protection device meets modular design standards. The product circuit board is made of excellent electronic components for reliable performance. 4. TWO COLOR INDICATOR: The green indicator of our overvoltage and undervoltage protection device shows that the power supply is normally powered. Red indicator light shows over voltage or under voltage. 5. RANGE OF APPLICATION: The over undervoltage protector is stable and reliable, widely used, 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: 32A 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.