ADW300 wireless power meter is a three-phase energy meter designed to measure active power consumption in low voltage systems, featuring small size, high accuracy and a wealth of functions. It supports RS485 interface and wireless communication (Lora, 2G, NB, 4G). The current value sampling mode is added to facilitate the installation and operation of the meter in different applications. This wireless power meter can be simply installed in distribution box, achieving the purpose of electricity sub-metering and energy monitoring for various areas where loads are varying.