1、WITH 3 SENSORS: Equipped with 3pcs 120A sensors, it can accurately monitor your air conditioning, stove, water heater, washing machine, dryer, etc. 2、MEASURING DATA: Measure voltage, current, power factor, etc., monitor your actual electricity anytime and anywhere to prevent unnecessary waste. 3、WIFI CONNECTION: Requires networkhub to monitor energy usage through mobile applications, with quick response and high accuracy. 4、EASY INSTALLATION: The power clamp is lightweight and easy to install, connecting the clamp to the power cord can help you monitor power consumption. 5、COMPACT SIZE: The 3 phase energy meter has compact size, easy installation and operation, with external antenna, which is simple and practical. Item Type: WiFi Energy Monitor Model: PC 321-Z-120-TY For ZigBee: 2.4GHz IEEE 802.15.4 For ZigBee Type: For ZigBee 3.0 Operating Frequency: 2.4GHz external antenna. Output Power: +20dBm CT Current: 3 x 120A Calibration Measurement Accuracy: ≤ 100W, within ± 2W. >100W, within ± 2%. Temperature: -20-55℃ Humidity: ≤ 90%, non condensing. 1 x WiFi Energy Monitor 1 x User Manual 1 x Antenna 1 x Antenna Base 4 x Accessory