Conventional Sounder visual indicator
SG-991E
Product features
Built-in standalone CPU, quick calculating speed and excellent stability.
Non-polarity two-wire bus to make cabling easy, and avoid wrong wiring.
Sounder/ visual indicator setting freely according to different environment.
Read more detail![CCCF.png CCCF.png](/userfiles/images/2020/11/12/2020111215512270.png)