1. Total active energy kWh measure 2. APP can read kWh , .S current , voltage , active power 3. LCD display, Real-time display of Voltage, Current, Active Power, reactive Power, power factory ,frequence, total Energy kWh 4. Power Supply: 110V+110V+N, Please noted this meter for Brazi, USA. 2 phase 3 wires. 5. MAX Current: 100A Clamp CT 6. Pulse Frequency: 1000imp/kWh 7. 35mm Din Rail install 8. Active energy accurate isclass 1 , IEC62053-21 Push the button last more than 10s , the WIFI led will flash quickly , then use APP to operation bear 400V /hour not damage Note:This meter Only supports 2.4G Wireless Network, NOT for 5G Different batches may have different label words, which will not affect the use Colour:White Material:plastic Package Contents: 1 x kWh Meter Wattmeter 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.