RS-485 scheme is a wired transmission scheme. Because it connects the electricity meter and data acquisition equipment through signal lines, it is suitable for small-scale centralized installation of electricity meters, such as hotels, office buildings, schools, residential quarters, etc.

It is not limited by the installation distance of meters. As long as there is a signal at the installation position, it can realize remote meter reading regardless of whether the meters are installed in different areas or cities. It has been widely used in factories, industrial parks, shopping malls, schools and other places.

It is suitable for occasions where there are not many transformer areas and electric meters are installed dispersedly. This kind of meter reading scheme can be selected in scattered scenes such as shopping malls, villas and parks.

It is suitable for scattered installation of electric meters, such as shops, parks, factories, etc. No wiring, stable signal transmission and strong anti-interference ability.