InnovairFlex™ duct smoke detectors combine an impressive collection of innovations designed to save you time and money and provide the flexibility you need in the field.

InnovairFlex™ 4-wire photoelectric duct smoke detectors offer 2 sensors to 1 powerboard capability in standard (D4120) and watertight (D4120W) versions.

D4240 photoelectric duct smoke detectors are 4-wire detectors that feature pivoting housings that fit both square and rectangular footprints and mount to round or rectangular ductwork.

InnovairFlex Series Intelligent Non-Relay Photoelectric Duct Smoke Detectors have been designed to sense smoke in the most challenging conditions such as high airflow speed, high temperatures or in high humidity.

Remote annunciators are designed for both conventional and intelligent applications. Their red LED provides visual indication of an alarm condition.

The DST family of sampling tubes are pieces of steel piping with a series of holes drilled the entire length of the tube and should extend the entire width of the duct.

Single Terminal Back Boxes are used for mounting RTS151 key. Remote annunciator accessories providing reset function and has a Red LED to indicate alarm conditions.