Features:The automatic recovery overvoltage and undervoltage protection devices meet modular design standards.The product board uses high-quality electronic components for reliable performance.When the power supply is unstable, its protection function will be activated automatically. Once the voltage exceeds a limited range of products, it will automatically cut off to protect the safety of electrical equipment and personnel. When the power returns to normal, the device will re-power it within 1 minute.The green indicator light indicates that the power supply is working properly. The red indicator light indicates overvoltage or undervoltage.Specification:Function: Overvoltage&Undervoltage ProtectionRated Alternative Voltage: 230V 50HzTransmit Maximum Current: 40AMaximum Wattage: 8.8KVAOvervoltage Action Cut-Off Value:> 270VAC +/- 5VNormal Voltage:175-270VACUndervoltage Action Cut-Off Value:<165VAC +/- 5VOvervoltage&Undervoltage Cut-Off:<1SPower Transmission Delays After Blackouts:<60sPower Consumption :<2WMotor Service Life:100000 TimesSize:77 x 35 x 45mm / 3.03 x 1.38 x 1.77inInstallation: 35mm DIN RailPackage List:1 x ProtectorNote:When connecting the product for the first time, you must wait for about 1 minute. Only when the red light goes out, can the product work normally..Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.