Used in electrical systems, typically in homes and commercial environments of small size. 【Real-time monitoring】: The application displays effect, current, voltage, effect factor, frequency and electricity statistics in real-time for each channel in forward and backward direction. With the effect statistics function, you can view daily, monthly and annual electricity consumption via Tuya application for mobile phone and follow energy consumption anytime. 【Automation function】: With automation function, you can define effect or current value in the application. When effect or current exceeds the defined value, the device starts to work. French: with a calibration function, the device can be calibrated by adjusting percentage. 【Easy use】: Mounting on 35 mm rail, no need to change the connection of the wires, safer to use, just insert the wires into the clamp and measure. 【Applications】: This can be especially useful for managing consumption and energy costs, as well as ensuring safety and efficiency in the electrical system. Suitable for managing household appliances, remote control, property rental, use of industrial control equipment, intelligent upgrade of energy distribution equipment etc. Obs: This product must be used with ZigBee bridges. Specifications: Name: Energy Meter Material: PC Type: 1CT, 2CT (optional) Current measuring range: 0.2 A-80 A Input voltage: 110-240 V, 50/60 Hz Product size: 47 * 47 * 18 mm/1.85 * 1.85 * 0.71 inch Packaging size: 1CT: 100 * 100 * 30 mm/3.94 * 3.94 * 1.18 inch 2CT: 115 x 115 x 40 mm/4.53 x 4.53 x 1.57 inch Packaging weight: 1CT: 150 g/5.29 oz 2CT: 200 g/7.05 oz