Feature:1. Multifunctional: This WIFI energy meter protector is multifunctional, which allows you to easily monitor 3 phase voltage, current, power factor, frequency and other important parameters, which is very convenient.2. Secure And Reliable: This WiFi 2 way energy meter can provide a series of conservation functions such as surge guard, under voltage guard, overload guard, under current guard, time delay guard, voltage imbalance guard, current imbalance guard, phase loss guard, phase loss guard, etc., which are secure and reliable.3. Quick Response: This WiFi smart circuit breaker guards against overvoltage, undervoltage or overcurrent conditions by immediately interrupting the power supply to avoid damage to your electrical equipment. Once the voltage returns to normal, the guard will automatically turn on again, which is a very quick response.4. Backlit LCD display: This WiFi smart power meter switch has a backlit LCD display that ensures a clear view even in low light conditions, and the backlight turns white when the guard is functioning properly.5. Sturdy And Robust: This energy circuit breaker meter is made of excellent flame retardant PC and red copper material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life.Specification:Item Type: Power Meter SwitchMaterial: PC Flame Retardant, Red CopperRated Voltage: 60-300V 50, 60HZ (Note: If your voltage is 110 VAC, the protector will provide undervoltage guard the first time you use it. Please change the overvoltage (60-300 V) and undervoltage (60-300 V) to suit your requirements.)Rated Current: 100AVoltage Upper Limit: 60-300V (Default 275V)Voltage Lower Limit: 60-300V (Default 175V)Overcurrent Guard: 1A-100A (Adjustable) (Default: 80A)Undercurrent Guard: 1A-100A (Adjustable) (Default: Off)Guard Delay: Manual 0000-9999 Seconds (Default 5 Seconds)Under and Over Voltage Guard Delay: Manual 0000-9999 Seconds (Default 20 Seconds)Current Overload Lower Limit Delay: 0000-9999 Seconds (Default 5 Seconds)Current Overload Upper Limit Delay: 0000-9999 Seconds (Default 5 Seconds)Current Guard Upper Limit Delay: 0000-9999 Seconds (Default 60 Seconds)Voltage Unbalance Guard: 10-100% (Adjustable) (Default Off)Current Unbalance Guard: 10-100% (adjustable) (Default Off)Overheat Guard: 10-85C (Adjustable) (Default 85C)Phase Sequence Guard: On and Off (Default On)Temperature: -20-60CHumidity: 85%Altitude: Up to 2000m / 6561.68ftWiring Capacity: Insulated copper wire below 35 square millimetersInstallation: 35mm Guide RailWired Phone Control: 1. Remote control via for SMART LIFE, for TUYA anytime, anywhere. 2. Timer: Timing, Countdown, Cycle Time. 3. Voice control through for assistant app..Package List:1 x Power Meter Switch1 x Manual