AD333 series include 2wire and 4wire detectors, which provide fast and reliable response to photoelectric smoke and heat (1350F) detection. While the smoke and heat detection circuits operate independently, their outputs being "OR" connected. The detector provide the fire detection performance by acting as a smoke sensor and / or a 1350F heat detector at the same location.

-  2 Wire Models
-  2 LED's for 360degreevisibility
-  Advanced detection and discrimination value.
-  Easy installation and maintenance.
-  Sleek low Profile housingdesign.
-  Durable Sensor head, no need for replacement.
-  SMD circuit board design, satisfacation, quality and reliability guaranteed.