1、For High Safety: Made of flame retardant PC material, with overvoltage protection, undervoltage protection, voltage display and measurement, it is safer and more reliable to use. 2、Good Protection: Multiple protection functions provide reassuring protection for electrical appliances, manually adjusting overvoltage, undervoltage, and overcurrent protection values. 3、Relay Function: Can prevent unstable voltage from causing additional damage to electrical appliances, achieving secondary protection. Delayed power on function, automatically restoring power supply after 1-600 seconds of voltage stability. 4、Dual Digital Display: The voltage protective device can clearly show the voltage, current, intuitive reading, more convenient to use. 5、Other Features: The self resetting overvoltage and undervoltage protector has functions such as reset mode selection, fault diagnosis, and default recovery. Item Type: Voltage Protective Device Model: CHLT-613 Material: PC Rated Power Supply Voltage: AC 220V Working Voltage Range: AC 80V-400V for single. Rated Frequency: 50/60Hz Overvoltage Setting Range: 230-300V Under Voltage Setting Range: 210-120V Overvoltage and Under Voltage Trip Delay: 0.1-30S Reset and Start Delay: 1-500S Voltage Measurement Accuracy: 2%, not exceeding 2% of the total range. Rated Insulation Voltage: 400V Output Contact: 1 NO Electrical Life: 100,000 Mechanical Life: 1,000,000 Protection Level: IP20 Pollution Level: 3 Altitude: ≤ 2000m Working Temperature: -50℃ - 55℃ Humidity: ≤ 50% at 40 ℃, non condensing. Storage Temperature: -30℃ - 70℃ Product Features: 1. Overvoltage protection. 2. Undervoltage protection. 3. Voltage display and measurement. 4. Adjustable overvoltage protection value. 5. Adjustable overvoltage recovery value. 6. Adjustable overvoltage protection action time. 7. Adjustable undervoltage protection value. 8. Adjustable undervoltage recovery value. 9. Adjustable under voltage protection action time. 10. Adjustable fault recovery delay time. 11. Adjustable delay time for power on. 12. Reset method selection. 13. Fault query. 14. Factory reset. 1 x Voltage Protective Device