Feiling produces a diverse range of three-phase meters. Let's take a closer look at this outstanding product. Its transparent glass case is equipped with an IR optical port. The bottom-mounted long cover prevents electricity theft. Shown here is another type of simply-structured 3-phase meter. It is characterized by a built-in battery box. This box is covered by a plate, thus making it beautiful and practical. Finally, I want to introduce this type of three-phase meter. The product comes with a battery box and an IR optical port. Its transparent cover is designed to be opened upwards. After opening up the cover, you will find a panel which can be customized with your own brand and logo.