This is a kind of quality intelligent meter that overvoltage undervoltage overcurrent and leakage protections functions. With automatic reclosing function when over-voltage under-voltage over-current or leakage occurs in line this product can immediately cut off supplys to prevents electrical equipment from burning. You can view current voltage leakage current and total kwh through mobilephone APP. Compatible with and Assistant for easy control with your voice. Features: 【Mobilephone Control】: Allows you to remotely control on/off of 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 most energy and make plans to save on energy and electric bills. 【Mobilephone APP Control】: You can view current voltage leakage current and total kwh through mobilephone APP. 【Voice Control】: Compatible with and Assistant for easy control with your voice. 【Set Timing】: Turn connected device on and off at specified time. 【Countdown】: Set countdown function and turn off device. (Type B and Type C support) 【Manual Setting】: Overvoltage undervoltage overcurrent leakage current thresholds can be set in application. (Type A and Type B support) 【Leakage Protections】: It will automatically trip after leakage to 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 device is offline application will send a reminder to you after device to go offline 30 minutes. 【Backlight Option】: You can set status of backlight to ensure that turning backlight on and off light during rest will not affect rest. (Type B and Type C support) 【 Off Memory Function】: Don t worry about off device will remember last state after 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 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