Overcurrent, overvoltage protection (App can set the threshold and save the settings when power is off. Supports Tuya's linkage and Tuya's low-carbon energy saving (currently )・ KWh Power Monitor Electricity Statistics 90-250V model: PC311-R- Supports OTA opening and closing card ring supports 80A Material: plastic colour: white Package Contents: 1 x Tuya Smart Energy Meter 1 x CT Transformer 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. Features: Support , Alexa language control switch.Supports cloud schedules, does not support local schedules 10A dry node output, App controlled switch Supports viewing in hour, day, and month dimensions, as well as the option to compare consumed and generated energy data Current, active power, voltage, frequency, power factor and other real-time data The clamp ring supports bidirectional measurement (supports measurement of power consumption and power generation) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.