Zigbee Version: support Tuya Zigbee Hub or Zigbee 2mqtt or Home Assistant control. WiFi Version: Tuya App or Smart Life App control. New update version, mini size and with wide volatge. Easy-to-use: Installation alone can help EV charger meet residual current Measuring of Voltage, Current, Power, Power Factor, Energy High-precision of energy measurement within tolerance 1 percent Alarm message delivering in the event of abnormal power supply Energy measurement: Accumulated energy, Hourly or Daily or Monthly energy Measured key data: Voltage, Current, Power, Power factor, Temperature Alarm sending: Over or under voltage, High temperature, High power, High consumption 1MW (18mm) width ultra-compact design Colour:White Material:plastic Package Contents: 1 x Energy Meter 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.