Features Appliances Protection: Prevent additional damage to your electrical appliances caused by frequent voltage fluctuations, providing secondary protection for your valuable devices. High Safety: Built-in overvoltage and undervoltage protection ensures a safer and more reliable operation, safeguarding your electrical equipment from potential damage. Value Adjustment: Manually adjust overvoltage, undervoltage, and overcurrent protection values according to your specific requirements, offering customizable protection for your appliances. Voltage Display: Equipped with a clear screen for intuitive voltage value monitoring and adjustment, providing convenience and ease of use. Multi Functions: Offers reset mode selection, fault query, and factory reset functions, adding versatility and control to the protective device. Specification: Item Type: Over Under Voltage Protector Material: PC flame retardant Current: 1-63A Over Voltage Protection Value Range (uvo): 240-300V Under Voltage Protection Value Range (uve): 140-210V Shutdown Delay Time: 2s (1-300s can be set) Self Recovery Protection Delay Time: 30s (1-300s can be set) Rated Frequency: 50/60Hz Error: 2% Voltage Measurement Accuracy: 1% Rated Insulation Voltage: 400V Output Contact: 1No Electric Life: 100000 times Mechanical Life: 1000000 times Protection Grade: IP20 Altitude: ≤2000m Operating Temperature -50℃ to 55℃ Humidity: ≤50% at 40℃ (non condensing) Humidity Temperature: -30℃ to 70℃ Package List: 1 x Over Under Voltage Protector Package List 1 x Over Under Voltage Protector