Feature: 1. Circuit Guard: This protector provides overvoltage guard, undervoltage guard, and voltage display (voltage measurement), supports manual adjustment of overvoltage, undervoltage, and overcurrent guard values. 2. Main Purpose: Can prevent the frequent on off of unstable voltage from causing additional damage to electrical devices. With delayed power on function, after the voltage stabilizes for 1‑500s, it automatically restores power supply. 3. Clear Display: This smart protective device provides voltage, current, and KWH displays, ensuring clear and intuitive readings, greatly improving operational convenience and work efficiency. 4. Multiple Functions: This self resetting overvoltage undervoltage protector has functions such as reset mode selection, fault inquiry, and factory recovery, meeting the needs of more scenarios for use. 5. Flame Retardant PC: The voltage protector shell is made of excellent PC material, which is environment friendly, flame retardant, safe and reliable, can be used in various environments, has a long service life. Specification: Item Type: Adjustable Voltage Protector Material: PC Rated Supply Voltage: AC230V Operating Voltage Range: AC140V-300V (single phase) Rated Frequency: 50/60HZ Overvoltage (>U) Setting Range: 230-300V Undervoltage (<U) Setting Range: 140-210V Kwh Display Range: 0-9999 >U and <U Trip Delay: 0.5S Reset Start Delay: 1-600S Voltage Measurement Accuracy: 1% (not more than 1% of the total range) Rated Insulation Voltage: 300V Output Contact: 1NO Electrical Life: 10⁵ Mechanical Life: 10⁶ IP Level: IP20 Pollution Level: 3 Altitude: ≤2000m Operating Temperature: -50℃-55℃ Humidity: ≤50% at 40℃ (non condensing) Storage Temperature: -30℃-70℃. Package List: 1 x Adjustable Voltage Protector