Client buy Acrel IoT EMS cloud system, hardware use ADW310-4GHW，ADW300-4GHW wireless energy meter, AKH-0.66/K split core current transformer. 2.ADW310-4GHW, ADW300-4GHW wireless 4G energy meterADW310,ADW300 wireless energy meter is mainly used to measure the active energy of low-voltage network. It has the advantages of small size, high precision, rich functions,etc., and has many optional communication methods. It can support RS485 communication, Lora, 4G and other wireless communication methods. The current sampling mode of the transformer is convenient for users to install and use in different occasions. It can be flexibly installed in the distribution box to meet the needs of power metering, operation and maintenance supervision or power monitoring for different areas and different loads.