Features Automatic Reset: This Adjustable Protector Has An Automatic Reset Function to Prevent Prolonged Power Outages And Respond Quickly to Prevent Undervoltage Hazards. Device Protection: Can Effectively Avoid Equipment Damage Caused by High Voltage At The Moment of Power on Or Short Period of Power off And Flashing Multiple Protection: Equipped with Over Under Voltage Protection, Voltage Imbalance Protection, Phase Fault And Phase Failure Protection, Overcurrent Protection, Etc. 3 Digital Panels: The Digital Panel Displays The Working Voltage In Real Time, Clear And Intuitive, with Complete Buttons to Ensure Simple And Convenient Operation. Din Rail Mounting: This Protector Uses Standard 35mm Din Rail Mounting, Convenient And Sturdy, with Quick Response Speed And Sensitive Internal Components. Specification: Item Type: Adjustable Voltage Protector Model: CHLT 616 Material: PC Rated Power Supply Voltage: AC230V Working Voltage Range: AC120V-300V Rated Frequency: 50/60Hz Overvoltage Detection Value: 230-300V (factory set 270V) Undervoltage Protection Value: 120V-210V (factory set 170V) Protection Recovery Delay: 1-600s (factory set 30s) Overcurrent Protection Value: 1-63A (factory set 63A) 3 Phase Voltage Imbalance Recovery Value: 5V-95V (factory set 10V) Phase Sequence Switch: ON OFF (factory set ON) Display Type: LED Voltage Measurement Accuracy: ≤1% (within the entire range) Rated Insulation Voltage: 450V Protection Level: IP20 Pollution Level: 3 Altitude: <2000 meter Working Temperature: -5℃-40℃ Humidity: ≤50% or 40℃ (non condensing) Storage Temperature: -25℃-55℃ Installation: 35mm Guide Rail Package List: 1 x Adjustable Voltage Protector Package List 1 x Adjustable Voltage Protector