Features: Made of high quality electronic components, it is solid, durable and good performance, long service life.It can set active threshold, and it will alarm when the measured active exceeds the threshold.With reset energy, which can be used to reset software. Its communication interface is RS485.High precision, fast response and stable communication. Comes with a shell to protect the module.Communication module only, other accessories demo in the picture is not included Specification:Voltage measuring range: 10-100VMin. measuring current/: 10-100AMaterial: Plasticcolour: As shownPackage Contents:1 x Communication Module1 set x Parts(Open close CT)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.