Features: 1. Complete Protection: The casing is made of PC flame-retardant material, with overvoltage protection, undervoltage protection, and voltage display, making it safer and more reliable to use. 2. Intelligent Adjustment: To provide safe protection for electrical appliances, manual adjustment of overvoltage, undervoltage, and overcurrent protection values. 3. Three Displays: The voltage protection screen displays voltage, current, and kWh for more intuitive and convenient readings. 4. Multiple Functions: The voltage protector has functions such as reset mode selection, fault detection, and factory reset. 5. Protection Mechanism: The protector can prevent frequent on/off of unstable voltage from causing further damage to electrical appliances and achieve secondary protection and automatically restore power supply after 1 to 600 seconds of voltage stabilization. Specifications: Product Type: Overvoltage and Undervoltage Protector Material: PC Rated Frequency: 50/60Hz Overvoltage (> U) Setting Range: 230-300V Undervoltage (< U) Setting Range: 210-140V kWh Protection Value: 1-9999 > U and < U Trip Delay: 0.5S Reset or Start Delay: 1-600S Output Contact: 1NO Electrical Life: 100000 Mechanical Life: 1000000 Protection Level: IP20 Contamination Level: 3 Height: 2000m Operating Temperature: -50-55 Air Humidity: 50% at 40 (no condensation) Storage Temperature: -30-70 Product Features: 1. Overvoltage Protection 2. Undervoltage Protection 4. Adjustable Overvoltage Protection Value 5. Adjustable Overvoltage Reset Value 6. Adjustable Overvoltage Protection Duration 7. Adjustable Undervoltage Protection Value 8. Adjustable Undervoltage Reset Value 9. Adjustable Undervoltage Protection Duration 10. Adjustable Fault Reset Delay 11. Adjustable Turn-on Delay 12. Reset Mode Selection 13. Fault Inquiry 14. Factory Reset Packing List: 1 x Overvoltage and Undervoltage Protector 1 x Instruction