This is a kind of quality intelligent power meter, that overvoltage, undervoltage, overcurrent, and leakage protections functions. With automatic reclosing function, when over-voltage, under-voltage, over-current, or leakage occurs in the line, this product can immediately cut off the power supplys to prevents electrical equipment from burning. You can view the current, voltage, leakage current, and total kwh through the mobilephone APP. Compatible with Alexa and Google Assistant for easy control with your voice. Features: Mobilephone Control: Allows you to remotely control the on/off of the circuit breaker from your cellphone whenever and wherever you want. Electricity Usage Statistics: View energy reports to accurately track energy usage in your home. Find out which appliances use the most energy and make plans to save on energy and electric bills. Mobilephone APP Control: You can view the current, voltage, leakage current, and total kwh through the mobilephone APP. Voice Control: Compatible with Alexa and Google Assistant for easy control with your voice. Set Timing: Turn the connected device on and off at the specified time. Countdown: Set the countdown function and turn off the device. (Type B and Type C support) Manual Setting: Overvoltage, undervoltage, overcurrent, leakage current thresholds can be set in the application. (Type A and Type B support) Leakage Protections: It will automatically trip after leakage to protect your safety. Leakage value can be adjusted to 30mAh-100mAh. (Type A, Type B support) Overvoltage Protections: 30V-100V (Adjustable) (Default: 30V) Overcurrent Protections: 1A-63A (Adjustable) (Default: 30A) Grouping Function: You can turn devices off or on by grouping them together for convenience. Offline Function: If the device is offline, the application will send a reminder to you after the device to go offline 30 minutes. Backlight Option: You can set the status of the backlight to ensure that turning the backlight on and off the light during rest will not affect the rest. (Type B and Type C support) Power Off Memory Function: Don't worry about power off, the device will remember the last state after power on again. (Type B and Type C support) Applicable Scenarios: It can be widely used in homes, factories, student dormitories, farmlands, municipal engineering, intelligent remotely control of water pumps, water heaters, floor heating equipments, etc. Note: Please install it by a professional electrician. This device only supports 2.4G wireless network, not 5G. Specifications: Name: Automatic Reclosing Protector Material: plastics Rated voltage: 230V Frequency: 50hz/60hz Input voltage: 80V-400V (Type A); 120-280V (Type B, C) Maximum current: 63A (Type A, B), 40A (Type C) Voltage measurement accuracy: 2% (Not Exceeding 2% Of The Total Ranges) Rated insulation voltage: 1000V Working temperature: -30 to 70 Item size: Type A: 85.5 * 31 * 60mm / 3.37 * 1.22 * 2.36in Type B: 100 * 36 * 67mm / 3.94 * 1.42 * 2.64in Type C: 100 * 18 * 67mm / 3.94 * 0.71 * 2.64in Item weight: Type A: 155g / 5.47ounce Type B: 229g / 8.08ounce Type C: 124g / 4.37ounce Package size: Type A: 87 * 40 * 40mm / 3.43 * 1.57 * 1.57in Type B: 103 * 78 * 40mm / 4.06 * 3.07 * 1.57in Type C: 103 * 78 * 40mm / 4.06 * 3.07 * 1.57in Package weight: Type A: 170g / 6.00ounce Type B: 245g / 8.64ounce Type C: 140g / 4.94ounce Packing List: 1 * Automatic Reclosing Protector