Measure the two-way energy and generated, ("from grid" and "to grid"), Measure Exported/ energy, App monitor how much energy the solar and PV system produces, as well as its power consumption. Rated Voltage: AC 100V-240V; Measuring Range: 0.1A - 150A High Accuracy Class: 1.0; Current Transformer calbe diameter: 16mm Calibrated Meter with High Accuracy, Each item be calibrated before delivery to make the high accuracy 1.0 The device is built in memory chip to store the data, so even if the wifi gets offline, the data 't lose. Electricity Statistic and Quick Check Bills 1. App Monitor Current, Power, Voltage Real-time 2. Electricity Statistic by Hourly, Daily and Monthly 3. Quick check Daily Bill and Monthly Bill, Monitor your Daily monthly expenses by saving on money, energy and CO2. Home Automation-Creat Scenes on App, when power (watts) or KWh reaches a value to turn on off other tuya device Creat Scenes on App, Make a Condition to work with other Tuya Device on App. When Generated or Power or KWh Reaches a Value, Let Other Tuya Device Turn On, or Turn Off App send a notification when Solar or PV generates power When the or generated power (watts) or KWh reaches a value, App send a notification, so that you can know when the Solar or PV starts working External Split Core Current Transformer with 1.5m cable 16mm, 150A with Cable 1.5m length Easy to install and Measure, Save Money Configure the module with App, afterwards put the clamp on the measured wire , then it can work. It's easy to install, not necessary to removing any wiring and safe, also be cost-effective, Quality Color: White Material: plastic Package Contents: 1 x Tuya Smart Bi Directional WiFi 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.