The new version supports bidirectional measurement and photovoltaic measurementSingle/3 - phase electricity compatible.Three current for Single phase applicationMeasures real-time Voltage, Current, PowerFactor, ActivePower and total energy consumptionDisplay the temperature of the device on the AppSuitable for both residential and commercial applicationImportant safety information:The power clamp must be installed and serviced only by a qualifiedelectrical personnel.Do not touch the terminals of the device during testing.Turn off all the power supply for this equipment before installing.Always use a properly rated voltage sensing device to confirm power is off.Replace all devices, doors and covers before applying power to theequipment.Failure to follow these instructions will result in death or seriousinjury.type: 300AMaterial: plasticcolour: whitePackage Contents:1 x 3 Phase WiFi Energy KWH MeterOnly 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.