1. MATERIAL: Using PC flame retardant material, possess overvoltage , undervoltage and voltage display(voltage measurement), safer and more to use2. REGULATION: Providing for electrical appliances, manually adjust over voltage, under voltage, over current values3. PREVENT DAMAGE: Can prevent the frequent on and off of unstable voltage from causing additional damage to electrical appliances, so as to achieve secondary 4. MULTIPLE FUNCTIONS: The current protector has the functions of reset mode selection, fault inquiry, and factory reset5. CLEAR DISPLAY: Over under voltage protector come with double display, make the data clear at a , support din rail installationSpecification:Item Type: Over Under Voltage ProtectorMaterial: PC flame retardantCurrent: 63AOvervoltage (): 240V to 300VUndervoltage (): 140V to 210VShutdown Delay Time: 2s (can be set 1-300s)Self Reset Delay: 30s (1-300s)Rated Frequency: 50/60HzError: 2%Voltage Measurement Accuracy: 1%Rated Insulation Voltage: 400VOutput 1NOElectrical Life: 100000 TimesMechanical Life: times : IP20Height: 2000meter or lessOperating Temperature: -50?-55?Humidity: ?50% at 40? (no condensation)Humidity Temperature: -30? to 70?Package List:1 x Over Under Voltage Protector