DF multi-user energy meter (indirect access type): Multi-user energy meter is a meter used to measure electric energy. It can detect 36 households (single-phase), 12 households (three-phase), and any combination of single and three-phase households below 36. Energy meters are commonly known as multi-user meters. Multi-user electricity meters have no contact, long life, good encryption type, stable and reliable operation. They can also use the infrared meter reader to collect the remaining power of the user at any time on site, and realize intelligent management through the control machine software. The biggest advantage is that in the case of adding high-power electrical appliances, there is no need to replace the meter, which is convenient to use.