duct smoke detectors for sale, brand-new and used.

NIB EST EC30Du-3 EDWARDS PHOTOELECTRIC DUCT SMOKE DETECTOR

new in box

New never used, in original packaging, was to be used on job site, but we purchased too many,Item was open and marked with a number as you can see in the photo's.SIEMENS ILI-1A IONIZATION OPEN AIR ("CEILING MOUNT") OR PLENUM USE ADDRESSABLE SMOKE DETECTOR (0-1200 CFM). THIS DETECTOR CAN BE USED IN APPLICATIONS AS YOU WOULD AN ILI-1, AS IT IS FOR 0-1200CFM AND HAS A GREATER PROTECTION FEATURE SET (GREATER AIR FLOW CONSIDERATIONS).

Head unit ONLY,  missing short sampling tube, drill template and bag of screws.

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SYSTEM SENSOR INNOVAIR FLEX MODEL # DNR INTELLIGENT NON - RELAY DUCK SMOKE DETECTOR MUST ORDER HEAD SEPARATELY ... THANKS FOR LOOKING .

New in factory box -job over stock. 

Second Wind Sales BRK Electronics 2851B 24 volt Smoke Detector Alarm 2-Wire White NEW

Siemens Smoke Detector HFP-11 with DB-11 base.  • Most Sophisticated “Detector

INNOVAIR FLEX SYSTEM SENSOR D4120 4-WIRE DUCT SMOKE DETECTOR BRAND NEW SHIPPING VIA USPS

I have 2 of these. Never installed.

I have 2 of these. Never installed.

System Sensor D4120 Innovair Flex HVAC Duct Smoke Detector 4-Wire New 4-Wire Photoelectric

Solo ST2 is an enhanced Solo and TruTest kit for testing and removing smoke/heat detectors up to 30 feet in height. This kit includes sensitivity tester, duct checker, db checker, aerosol smoke, and more.

SYSTEM SENSOR INNOVAIR DH100ACDCLP DUCT SMOKE DETECTOR Replaces Model DH100ACDCP RETURN POLICY

SYSTEM SENSOR INNOVAIR DH100ACDCLPX DUCT SMOKE DETECTOR Replaces Model DH100ACDCP RETURN POLICY

NEW! SYSTEM SENSOR INNOVAIR DH100ACDCLWP DUCT SMOKE DETECTOR Watertight NEMA 4 Enclosure RETURN POLICY

NEW! JOHNSON CONTROLS INNOVAIR DH300P PHOTOELECTRIC DUCT SMOKE DETECTOR Replaces DH302J and Detector Head RETURN POLICY