Smoke Alarm is key component of Fire Safety System. Addressable Smoke Detector works with bus type coded fire alarm control panel. As fire department''s requirement, photoelectric smoke detectors should be installed in industrial and civil buildings. The intelligent Smoke Detector sense smoke in rooms of 60 square meters. It send accurate alarm address and alarm information such as alarm type to alarm panel. It can also receive and execute the control commands given by a fire alarm control panel.