This all-in-one design smart WiFi+RS485 IoT device applied to AC230V/400V, 50/60Hz, rated current up to 63A single or three phase circuits in resident, commercial and industrial buildings with 2.4G WiFi, to measure electricity consumption and offer prepayment as option; to remote control and set protections against overload, residual current(leakage), high temperature, overcurrent, over/under voltage, low balance(prepaid) via mobile App anytime anywhere; programmable timing control to make your scheduled life efficiently and save electricity, and voice control through AI speaker, such as for Alexa, for Yandex Alice, and etc. Device sharing with your family or persons concerned in your team. Poles: MCB(1P+N, 2P, 3P+N, 4P); RCBO(2P, 4P); Rated voltage: AC230V/400V (over/under voltage protection adjustable); Rated current: up to 63A (overcurrent adjustable); Frequency: 50/60Hz; Breaking capacity: 6000A Mounting: 35mm din-rail; Communication: WiFi 2.4G + RS485 Modbus RTU; Functional features 01. Four options on control: Remote control anytime anywhere (mobile app, Tuya Smart, Smart Life) Voice control (AI speaker, for Alexa, for Google, Alice, ...) Timing control (programmable Schedule) Color: White Material: ABS Package Contents: 1 * Voltage Current Protector