Tuya WiFi Smart Power Monitor: Monitor energy consumption in real time Power Statistics: Check voltage, current, power at any time Measurement Process: Clip the measurer to the cable and use your phone to connect the module (Cable needs to be above 10W) Power Settings: Set the upper and lower limits of power and implement automatic measurement, Measuring Range: 0.2-80A, Maximum standby power range: 3-10W Electricity query: You can view hourly, daily, monthly, Yearly and total KWh Consumed in App The product appearance and printed words depending on the batch, but this does not affect use. Colour:Black Material:plastic Package Contents: 1 * Tuya WiFi Smart 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.