Fangrui Product Details App Can Display Channel A And B Real-time Power, Current, Voltage For Forward And Reverse Direction Clrealy. The Meter Is Allow To Do Calibration, The Device Is Able To Do Calibration By Adjusting The Percentage. And You Can Read From App For Each Channel Real-time Total Power Of 2 Channels Of Reverse And Forward Direction Power For Channel A And B Separately(w) Current(ma) Voltage(v) Power Factor, And Frequency(hz) Electricity Statistic For Each Channel In Forward And Reverse Direction. Hourly Elec. (kwh) Daily Elec. (kwh) Monthly Elec. (kwh) Yearly Elec. (kwh) Technical Data: Rated Voltage: 100-240v Ac 50/60hz Measurable Current Range: 0.2a-80a Protocal: Zigbee Wifi Frequency: 2.4ghz (not Support 5ghz) Ambient Temperature Range: -10c ~ 55c Electricity Statistic Channel A , B Separately And Total Daily Monthly, Yearly Reverse And Forward Direction Automation , It Allows To Make A Scene For This Device Working With Other Tuya Devices Set Automation For The Measured Device , For Example, If Power Or