duct detector for sale, brand-new and used.

Duct Smoke Detector, Firex Smoke Alarm,Model 2650-660 works 100% Erika Flores

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

Simplex 4098 9756 Air Duct Detector Sensor Compatible with Simplex Panel models: 4010, 4020, 4100, and 4120 14 day warranty

System Sensor D4120W Innovair Watertight HVAC Duct Smoke Detector 4-Wire NEW U.S. Shipping ONLY!!! PLEASE ASK ALL QUESTIONS BEFORE BIDDING ON THIS ITEM!!!

Sitting on a shelf with the orange dust cap on since ordered. Never used, never installed

System Sensor DNR Duct Detector. This does not include smoke heads or sampling tubes.

Fenwal DH-2000 smart duct detector. Fully functional (tested) Comes with detector and tube (approx 5', but can be cut down to reduce shipping cost). All duct detectors use EMT, and 10-12 holes spaced for width of duct.

NEW SYSTEM SENSOR SMOKE DUCT DETECTOR HOUSING

SIEMENS SMOKE DETECTOR AIR DUCT HOUSING AD-3ILP

In good working condition when pulled. The housing is cracked and broke off where the screws go. Other than that, everything is in good working order.

*Note INNOVAIR ADP-F INTELLIGENT PHOTOELECTRIC DUCT SMOKE DETECTOR QUANTITY: 10 AVAILABLE Still in original packaging.

YOU ARE BUYING A National Time And Signal DDP-2 Universal Voltage Duct Smoke Detector. THIS UNIT IS BRAND NEW IN THE BOX AND WILL COME AS PICTURED. SHIPPING WILL BE FREE TO THE LOWER 48 STATES R6 AB

SIMPLEX 4098-9806 DUCT DETECTOR REMOTE TEST STATION BRAND NEW IN ORIGINAL FACTORY BOX--BOX HAS BEEN OPENED FOR PICTURES 4098-9806 PART # 0621151 UNIT COMES WITH SCREWS AND KEY AS ALWAYS

Used. Sold as is. No returns accepted.