Feature: 1. POWER MONITORING: This smart meter can measure voltage, current, and power factor, and monitor the actual power of your home anytime and anywhere, effectively saving energy. 2. 3PCS 200A SENSOR: This meter is equipped with 3pcs 200A liquid level sensors to accurately monitor your air conditioning, stove, water heater, washing machine, dryer, etc. 3. WIFI CONNECTION: Requires 2.4GHz WiFi and internet connection, real time monitoring of energy usage through mobile application, with quick response and high accuracy. 4. COMPACT SIZE: The 3 phase smart electricity monitor is compact in size, easy to install, and equipped with an external antenna, which is convenient and practical. 5. STABLE CLAMPING: The power clamp is lightweight and easy to install. Connecting the clamp to the power cord helps you monitor the power consumption of the device. Specification: Item Type: Smart Energy Monitor WIFI: 802.11 B/G/N20 Operating Frequency: 2.4GHz External Antenna Output Power: +20dBm CT Current: 3 x 200A Calibration Accuracy: ≤100W (within ±2W), >100W (within ±2%) Temperature: -20-55℃ Humidity: ≤90% No Condensation. Package List: 1 x Smart Energy Meter1 x User Manual1 x Antenna4 x Accessories Note: The power clamp must be installed and repaired by qualified personnel. During the testing process, do not touch the terminals of the device, and turn off all power to the device before installation to ensure your safety.