Specification: Input: AC90-250V 50/60Hz Contact: 10A 220Vac (resistive) The opening and closing clamp ring supports 120A. Supports cloud schedules, but does not support local schedules. Overcurrent and overvoltage protection (App can set threshold value). Settings are saved when power is turned off. Supports Tuya's linkage and Tuya's low-carbon energy saving. Support OTA. WiFi frequency: 2.4GHZ size: 46 x 18.7 x 46mm Material: plastic colour: white Package Contents: 1 x Smart power Meter 1 x CT Clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. The clamp ring supports bidirectional measurement (supports measurement of power consumption and power generation). Current, active power, voltage, frequency, power factor and other real-time data. Supports hour, day, and month dimension viewing, as well as the option to compare consumed and generated energy data. Features: Support for , for Alexa voice control switch. 10A dry node output, App controlled switch.