Features Multifunctional --- This smart home energy meter features real time monitoring and measurement of energy usage, voltage, current, power factor, active power and frequency. Safe And Reliable --- This smart home energy meter has an overload protection function, which can effectively avoid electrical malfunction and safety problems caused by excessive energy consumption of electrical appliances. Easy To Operate --- This smart home energy meter is very easy to operate, without changing the wire connection, you only need to put the wires into the clips to take measurements. Monitor Bidirectional Energy Consumption --- This smart home energy meter can monitor bidirectional energy consumption, if the user has a solar photovoltaic system at home, after installing it according to our wiring diagram, the device can monitor the powe 2 CT Clamp Sensors --- This smart home power meter comes with 2 120A current transformer CT clamp sensors for measuring current. Specification: Item Type: Smart Home Energy Monitor Material: ABS Card Loop: 120A x 2 for ZigBee: 3.0 RF Characteristics: Operating Frequency: 2.4GHz Built In Antenna Working Voltage: AC90-250V 50, 60Hz Measuring Voltage Range: 0.2A-120A Calibrated Measurement Accuracy: ≤100W ( Within ±2W),>100W ( Within ±2%) Reporting Cycle: Every Minute Temperature Range: -20-55℃ Humidity Range: ≤90% Non Condensing Installation: 35MM DIN Rail Package List:1 x Smart Home Energy Monitor 1 x Manual Note:The for Zigbee version needs to be used with the for ZigBee gateway. Package List 1 x Smart Home Energy Monitor 1 x Manual