Features MAIN PURPOSE --- This device can monitor bidirectional energy consumption, as well as the energy generated by solar PV system and the energy consumed by urban power grids. WITH CLAMP SENSOR --- This smart energy meter is equipped with an 80A current transformer CT clamp sensor (aperture 10MM), which is used in conjunction with the for ZigBee gateway. PARAMETER MONITOR --- This home smart electricity meter can monitor voltage, current, power factor, active power, and frequency, and monitor and measure energy usage in real time. MULTIPLE FUNCTIONS --- The electricity monitor adopts a 2.4GHz working frequency, has a wide measurement range, high accuracy, supports click operation and automation of other devices. OVERLOAD PROTECTION --- This power monitor has an overload protection function, effectively avoiding electrical failures and security issues caused by excessive energy consumption. Feature: 1. APP ENERGY RECORD: You can view the energy consumption records of hours, days, months, and years on the APP, and can keep records for up to 1 year in the APP. Specification: Item Type: Smart Energy Monitor Clamp: 1 x 80A For ZigBee: 3.0 RF: Working Frequency: 2.4GHz, built in antenna Working Voltage: AC90-250V 50/60Hz Measuring Voltage Range: 0.2A-80A Calibration Measurement Accuracy: ≤100W (within ±2W), >100W (within ±2%) Reporting Cycle: Every Minute Temperature Range: -20-55℃ Humidity Range: ≤90% non condensing Installation Method: 35MM DIN Rail Size: Approx. 51.5 x 23 x 46mm / 2 x 0.9 x 1.8in Package List:1 x Energy Monitor 1 x User Manual Note:Needs to be used with for ZigBee gateway. Package List 1 x Energy Monitor 1 x User Manual