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

This is a System Sensor low flow fire alarm duc

You are bidding on a new Edwards/EST Siga SD Super Duct Detector. This item is new in the box and ready to install!!! Posted with eBay Mobile

Brand new Innovair FireLite Alarms Intelligence Photoelectric Duct Smoke Detector by Honeywell 

Up for your consideration is a FSD-751RPL duct detector in the original box and ready to put into your system. Will work with air velocities as low as 100fpm up to 4000fpm. DP sampling =.0015-1.2 INWC.

NIB 2 wire duct smoke detector.

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New in box. System Sensor Innovair flex Intelligent non-relay duct detector. Model DNR.

EDWARDS 6266B-001 Photoelectric duct detector Item is in like new condition and appears to have never been installed Please ask any questions before purchasing

Brand new D355PL non relay duct detector. 

Vigilant signature series super duct detector in new condition.

Edwards SIGA-DH Duct Detector Housing Smoke Detector Fire Alarm

You are looking at a Siemens's duct detector housing without cover. Never used and all original parts included.  Thank you for looking and happy shopping.

This is a lot of 3 system sensor DNR non relay duct smoke detectors. These are missing some of the plastic covers. Sold for parts or repair.

Brand new inbox...Never been used. SpecificationsAir Duct Velocity100 to 4000 ft./min. (0.5 to 20.32 m/sec)Alarm auxiliary contacts DPDT10A @ 30 VDC (resistive); 10A @ 250 VAC (resistive); 1/2 HP @ 240 VAC ; 1/4 HP @ 120 VACAlarm Current:65 mA @ 24VDC 135 mA RMS @ 24VAC 60

The Gamewell-FCI Velociti® Series, low-flow photoelec- tronic air duct smoke sensors are capable of sensing smoke in air velocities from 100 to 4,000 feet per minute (0.5 to 20.32 m/sec.). ADPF sensors feature low-flow technology that enables duc

Brand new SIMPLEX AIR DUCT 4 WIRE SENSOR HOUSING W/RELAY SMOKE DETECTOR. $120 each or best offer. rocarolando@gmail.com

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RTS151 remote test station is automatic fire detector accessory designed to test duct smoke detectors from a convenient location.

The SuperDuct two-wire duct smoke detector is ideally suited to applications where early indication of combustion is required within the confined space of ventilation ductwork. Its primary purpose is to provide early warning of an impending fire and to prevent smoke from circulating throughout the building. It is typically used to detect smoke in the supply side of the HVAC system but can provide supervision of the return side as well.