Please Note this Item Requires a Tuya ZigBee Gateway to Work. 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:-10℃ - 55℃ Type:2 Channels-2CT Colour:White Material:Plastic Package Contents: 1 * Tuya Smart ZigBee 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. Non-connect to , Easy and Safe to Install: No need to change the wires, Just put the wire into the clamp, then it can measure, very easy. Small Size Module , Easy to Install. 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 to do calibration by adjusting the percentage We , every product will be tested before delivery. 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 Current Is over the Value, then other tuya device starts to work.