system sensor smoke detectors for sale, brand-new and used.

Lot of 9 SMOKE-AUTOMATIC FIRE DETECTORS | 4W-B | 4-Wire Photoelectric (Manual in electronic format shown in photos is available upon request) Free Shippinga

INNOVAIR FLEX (INNOVAIRFLEX).....SYSTEM SENSOR.....4 WIRE DUCT SMOKE DETECTOR.....MODEL D4120... ..MAKE YOUR OFFER AND SAVE MONEY

4-wire photoelectric low-flow duct smoke detector The InnovairFlex™ Series are the only duct smoke detectors flexible enough to fit configurations from square to rectangular and everything in between. The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet pe

4 NEW I3 SYSTEM SENSOR 2WT-B 2 WIRE THERMAL SMOKE DETECTORS 2WTB. Each brand new.

New, LOT of 12 Siemens HFP series intelligent fireprint multi-criteria smoke and heat detectors. They are: 6 HFPT-11 Heat Detectors model number 500-033380 (all in box) 4 HFP-11 Detectors model number 500-033290 (3 in box, one has no box) 2 FP-11 Detectors (no box) These came from unused and liquidated stock of an electrical company. Most of these are brand new in box no writin

System Sensor D4120 4 Wire Photoelectric Low-Flow Duct Smoke Detector The SYSTEM-SENSOR-D4120 4-wire photoelectric, low-flow, duct smoke detector senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute, temperatures of -4 degrees F to 158 degrees F, and a humidity range of 0 to 95 percent (non-condensing). A plug-in sensor head offers improved false alarm immunity and simple installation, testing, and maintenance.

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.

Mixed lot of smoke detectors. Sold as is. No returns.

+24V Smoke Detector Model-OSD243

+24V Smoke Detector

Brand new still sealed Mix-2251 smoke detector heads lot of 10 Est2251 System Sensor 2251

***New In Box*** Silent Knight SK2 Conventional Fire Control Panel by Honeywell Silent Knight SK2 2 zone Fire Alarm Control Panel The SIL-SK2 is a 2 zone Fire Alarm Control Panel that is compatible with devices such as two or four wire smoke detectors pull stations or any other normally open contacts. Upon activation

Lot of 4 - system Sensor 4WTB Smoke Detectors 12/24v w/ heat detector 4WT-B Brand new in box

SK-5208 The SK-5208 is a microprocessor based control panel with integrated UL listed communicator designed for applications requiring smoke detection, manual pull stations, and sprinkler supervision. It features an easy to read LCD display with programmable English readout and user friendly tactile keys. The basic unit offers

This auction is for Monaco / System Sensor (2) 721-124-00 / 5251RB Heat Detectors, (2) 723-353-00 / 2251B Smoke Detectors & (1) 729-158-00 / M500S Control Module. These items were purchase from Monaco, but they have both part #'s on the box. The parts have the System Sensor sticker with the System Sensor Model #.

NOS System Sensor BEAM 1224 Projected Beam Type Smoke Detector with Reflector these are new old stock in open box I have acquired a large lot of security and fire parts Will list as time permits See my other items **FAST SHIPPING**

Lot of ten (10) NEW System Sensor 4W-B 4-wire, Photoelectric Smoke Detectors

Brand-new in box

Specifications Air Duct Velocity

Lot of eleven (11) NEW System Sensor 2W-B 2-wire, Photoelectric i3 Smoke Detectors