Feature 1 with 3 sensors: Equipped with 3 120A sensors, it can accurately monitor your air conditioner, stove, water heater, washing machine, dryer, etc. 2 Measurement data: Measure voltage, current, power factor, etc., monitor your actual power consumption at any time, anywhere to avoid expensive maintenance costs. 3WIFI connection: Requires 2.4GHz WiFi and Internet connection, monitor energy usage through mobile app, fast response and high accuracy. 4. Easy to install: The power clip is lightweight and easy to install, connecting the clip to the power cord can help you monitor power consumption. 5. Compact size: The three-phase energy meter is compact in size, easy to install and operate, and comes with an external antenna, making it simple and practical. Project Type: Power Monitor WIFI: 802.11 B/G/N20 Working Frequency: 2.4GHz External Antenna Output Power: +20dBmCT Current: 3 x 120A Connection Voltage: 100-240V Calibration Accuracy: 100W (within 2W), >100W (2 Within %) Temperature: -20-55 Humidity: 90% Non-condensation Packing List 1 x Smart Meter 1 x User Manual 1 x Antenna 4 x Accessories Note The power supply clip must be installed and serviced by qualified personnel. During the test, do not touch the device terminals. Please turn off all power to the device before installation to ensure your safety.