Smoke Detectors

smoke detectors — pre-owned

1,021listings

Browse 1,021 smoke detectors — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Silent Knight SD505-APS (Hochicki) Smoke Detector With Base. In Working Order
Seller refurbishedBuy It NowBest Offer

Silent Knight SD505-APS (Hochicki) Smoke Detector With Base. In Working Order

I removed these smoke detectors from a fully functional system, I disassembled and cleaned the chamber of any dust, Note; Silent knight no longer makes these devices and if you have these type smokes in your building, you cannot replace with the new SK-Photo devices as your system used the SD portfolio and the new smokes use the SK portfolio (you cannot mix sk & sd devices on your panel I also have the SD500-PS & SD500-PSA pull boxes available as well Thanks for looking

$110.00
+$30.00Levittown, US
fire-partz
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100.0%Excellent· 381
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SILENT KNIGHT SD505-ADH Duct Detector(w/SD505-APS Smoke Head) EXELENT CONDITION
UsedBuy It NowBest Offer

SILENT KNIGHT SD505-ADH Duct Detector(w/SD505-APS Smoke Head) EXELENT CONDITION

In Exelent Conditions. The Silent Knight SD505-ADH Duct Smoke Detector including is used for detecting smoke and products of combustion present in air moving through an HVAC air handling system. The smoke chamber of the smoke detector was cleaned and blown out.

$350.00
Free ShippingMiami, US
ulfalv
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99.6%Excellent· 300
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SILENT KNIGHT SD505-AIS : Ionization Smoke Detector
UsedBuy It NowBest Offer

SILENT KNIGHT SD505-AIS : Ionization Smoke Detector

* Devices were removed from a System working , ( in a Commercial/Office Building ) due to a FACP Upgrade. Excellent condition : No bumps ** functional / TesTed / The Smoke Chamber was blown out and cleaned * ** The SD505-AIS is effective in detecting rapidly burning fires with little smoke The Silent Knight SD505-AIS has responsive, yet high operational stability for an extremely wide range of uses. The SD505-AIS can be used in areas where early warning of trouble from super-heated or flaming combustibles is expected.The detector features automatic compensation for contamination and a simple detector sensitivity test procedure that can be run from the panel or remotely (using theSKSS 5660 or 5670 software with a Windows TM based computer)

$390.00
Free ShippingMiami, US
ulfalv
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99.6%Excellent· 300
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SILENT KNIGHT SD505-ADHR Duct Detector  (built-in Relay) w/SD505-APS Smoke Head
UsedBuy It NowBest Offer

SILENT KNIGHT SD505-ADHR Duct Detector (built-in Relay) w/SD505-APS Smoke Head

* WITH SD505 APS Smoke Head ** Removed due to system upgrade / *** Functional / Tested All electrical parts/components on the board have been cleaned. The smoke chamber of the smoke detector was cleaned and blown out. *** The SD505-ADHR is a is a heavy-duty metal housing ; with a built-in relay module that is used to control a fan motor to stop air flow in a fire alarm situation. Silent Knight SD505-ADHR addressable duct smoke detector detects smoke and products of combustion present in air moving through an HVAC duct to prevent re-circulation of smoke into the air handling system. **** The SD505-ADHR can be powered from a 120 VAC, 240 VAC, or 24 VDC/VAC power source.

$485.00
Free ShippingMiami, US
ulfalv
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99.6%Excellent· 300
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NOTIFIER FST-951 INTELLIGENT ADDRESSABLE 135° FIXED TEMP. HEAT DETECTOR "WHITE"
UsedBuy It Now

NOTIFIER FST-951 INTELLIGENT ADDRESSABLE 135° FIXED TEMP. HEAT DETECTOR "WHITE"

NOTIFIER FST-951 INTELLIGENT ADDRESSABLE 135° FIXED TEMP. HEAT DETECTOR "WHITE" FULLY FUNCTIONAL PRE-OWNED CONDITION FLASHSCAN PROTOCOL ONLY 64 AVAILABLE 1 ORDER = 1 FST-951 SEE PICTURES FOR DETAILS

$24.99
Free ShippingCheyenne, US
dice-cf
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100.0%Excellent· 3.1k
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System Sensor 2400 Smoke Detector Yellowed
UsedBuy It NowBest Offer

System Sensor 2400 Smoke Detector Yellowed

Yellowed from the lighting.

$4.00
See listingDes Moines, US
williamljacobs
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99.5%Excellent· 1.0k
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System Sensor D4120 4-Wire Duct Smoke Detector with 2D51 Photoelectric Head
Seller refurbishedBuy It NowBest Offer

System Sensor D4120 4-Wire Duct Smoke Detector with 2D51 Photoelectric Head

Up for sale is a complete, pre-owned System Sensor D4120 InnovairFlex 4-Wire Duct Smoke Detector Assembly paired with the matching System Sensor 2D51 Photoelectric Sensor Head.

$65.99
See listingWilmington, US
jet_salvage
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99.7%Excellent· 780
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System Sensor 4WTA-B 4W Smoke Detectors
UsedBuy It Now

System Sensor 4WTA-B 4W Smoke Detectors

The house we purchased had all of these detectors replaced on 10/24, so still fairly new. We upgraded our system so we don’t need these anymore. The System Sensor 4WTA-B 4W Smoke Detectors are a reliable and efficient fire protection equipment designed for commercial and industrial settings. With a trusted brand name like System Sensor, these smoke detectors are known for their quality and performance. The 4WTA-B model offers early detection of smoke to ensure the safety of the premises. It is essential for business owners and managers to prioritize fire protection equipment like these smoke detectors to safeguard their employees and property.

$25.00
Free ShippingSudbury, US
iomstood88
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98.6%Excellent· 839
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🤪 SYSTEM SENSOR DUCT MOUNT SMOKE DETECTOR 120 VAC D4120
-10%
UsedBuy It Now

🤪 SYSTEM SENSOR DUCT MOUNT SMOKE DETECTOR 120 VAC D4120

SYSTEM SENSOR DUCT MOUNT SMOKE DETECTOR. LOCATED ROW 3R-2 CC. 120 VOLT AC. 24 VOLT AC/DC. WE HAVE VERY REASONABLE RATES AND YOU CAN ALWAYS SET-UP YOUR OWN FREIGHT.

$62.99$69.99-10%

You save $7.00

Free ShippingPennsauken, US
breakdownsolutions
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99.9%Excellent· 14.6k
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System Sensor 4W-B 4-Wire Photoelectric Smoke Detector with Mounting Base
-17%
UsedBuy It NowBest Offer

System Sensor 4W-B 4-Wire Photoelectric Smoke Detector with Mounting Base

Used in good condition.

$19.00$22.87-17%

You save $3.87

+$8.50Greenwood, US
dvv
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99.5%Excellent· 31.5k
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(1) Siemens 500-033290 / HFP-11 Smoke Detector (See Description)
UsedBuy It NowBest Offer

(1) Siemens 500-033290 / HFP-11 Smoke Detector (See Description)

WHAT YOU SEE IS WHAT YOU WILL GET.

$23.99
See listingTacoma, US
wrs168
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100.0%Excellent· 130
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System Sensor i3 2W-B
UsedBuy It NowBest Offer

System Sensor i3 2W-B

System sensor i3 2W-B smoke detector with base. Detectors are used but are in good working condition.

$20.00
Free ShippingWest Monroe, US
andyc3828
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100.0%Excellent· 67
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System Sensor 2W-B Photoelectric Smoke Detector
UsedBuy It Now

System Sensor 2W-B Photoelectric Smoke Detector

The System Sensor 2W-B Photoelectric Smoke Detector is a reliable and high-quality fire protection equipment designed for commercial and industrial use. As part of the System Sensor brand, known for its trusted products in the field of safety and security, this smoke detector provides early warning in the event of a fire, ensuring the safety of employees and property. The 2W-B model is designed to detect smoke quickly and accurately, making it a crucial component in any comprehensive fire protection system.

$25.00
See listingPflugerville, US
electronics-new-n-used
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100.0%Excellent· 389
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SILENT KNIGHT SD505-ADHR Duct Detector w/SD505-APS Smoke Head & SD505 DTS
UsedBuy It NowBest Offer

SILENT KNIGHT SD505-ADHR Duct Detector w/SD505-APS Smoke Head & SD505 DTS

The smoke chamber of the smoke detector was cleaned and blown out.

$520.00
Free ShippingMiami, US
ulfalv
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99.6%Excellent· 300
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SIEMENS FP-11 / FP11 (USED)
-49%
UsedBuy It Now

SIEMENS FP-11 / FP11 (USED)

The product is used surplus. Radwell is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers.

$302.82$594.00-49%

You save $291.18

+$12.90Lumberton, US
radwell_international
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99.8%Excellent· 216.1k
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Siemens  ILI-1 Ionization Smoke Detectors (Lot of 5) With Bases.
Seller refurbishedBuy It NowBest Offer

Siemens ILI-1 Ionization Smoke Detectors (Lot of 5) With Bases.

The Siemens ILI-1 Ionization Smoke Detectors are a set of five smoke detectors with bases. 3 bases are the DB-3S and the other 2 are the DB-X3RS relay bases, designed to provide reliable fire protection in various settings. These detectors from Siemens are known for their high-quality construction and effective ionization technology, making them a trusted choice for businesses and industrial facilities. With the model number ILI-1, these smoke detectors offer peace of mind and safety for any environment requiring efficient fire protection equipment.

$500.00
See listingReno, US
shabacig_0
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100.0%Excellent· 23
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System Sensor Innovair DNR Duct Detector
-36%
Seller refurbishedBuy It Now

System Sensor Innovair DNR Duct Detector

Cleaned & tested, fully functional. May have signs of wear that do not inhibit function.

$31.81$49.99-36%

You save $18.18

+$10.79Stuart, US
sab3rr
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99.6%Excellent· 794
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PYROTRONICS (CERBERUS) D1-2D SMOKE DETECTOR WITH BASE
UsedBuy It NowBest Offer

PYROTRONICS (CERBERUS) D1-2D SMOKE DETECTOR WITH BASE

DI-2D smoke and base used

$100.00
See listingParlier, US
chrisafae-8
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100.0%Excellent· 114
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Notifier by Honeywell FSP-951-IV Smoke Detector Smoke Detectors MPN FSP-951-IV
UsedBuy It NowBest Offer

Notifier by Honeywell FSP-951-IV Smoke Detector Smoke Detectors MPN FSP-951-IV

Notifier by Honeywell FSP-951-IV Smoke Detector Smoke Detectors MPN FSP-951-IV

$15.00
Free ShippingTampa, US
will-739926
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100.0%Excellent· 29
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Siemens Cerberus Pyrotronics ILI-1 Smoke Detector (USED, GREAT CONDITION)
UsedBuy It NowBest Offer

Siemens Cerberus Pyrotronics ILI-1 Smoke Detector (USED, GREAT CONDITION)

Siemens Cerberus Pyrotronics ILI-1 Smoke Detector. Used, untested, but in great condition.

$95.00
See listingCorvallis, US
mikeyrb
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100.0%Excellent· 82
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Siemens FP-11 Fire Safety Smoke Detector Head White MPN FP-11, Smoke Detectors
UsedBuy It NowBest Offer

Siemens FP-11 Fire Safety Smoke Detector Head White MPN FP-11, Smoke Detectors

Siemens FP-11 Fire Safety Smoke Detector Head White MPN FP-11, Smoke Detectors

$10.00
See listingFishkill, US
firealalarms222
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System Sensor DH100ACDCLP Smoke Duct Detector
Seller refurbishedBuy It NowBest Offer

System Sensor DH100ACDCLP Smoke Duct Detector

They have been cleaned and tested. Price is for 1 Duct Detector

$40.00
Free ShippingTemple Hills, US
rayb1556
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100.0%Excellent· 288
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Bosch F220-PTH Photoelectric Smoke Detector With Heat Detector And Base
UsedBuy It Now

Bosch F220-PTH Photoelectric Smoke Detector With Heat Detector And Base

See photos: the detector head was tested and found to be operational.

$34.99
Free ShippingSouthborough, US
firealarmdeals5967
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100.0%Excellent· 822
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 Silent Knight SK-PHOTO-W Low-Profile Addressable Detector, White EUC! Loc 126
Seller refurbishedBuy It NowBest Offer

Silent Knight SK-PHOTO-W Low-Profile Addressable Detector, White EUC! Loc 126

With a sleek white design, this detector is perfect for maintaining safety in large facilities with a low profile.

$40.00
See listingHightstown, US
jdfireparts
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100.0%Excellent· 171
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System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector, 4-Wire Thermal Used
UsedBuy It Now

System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector, 4-Wire Thermal Used

Used, fully working when removed to install addressable system. Listing is for 1 smoke per purchase.

$35.00
Free ShippingAfton, US
kustomz615
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99.4%Excellent· 805
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System Sensor 5451 Heat Detector Fix 135° F + Rate-Of-Rise Fire Alarm
UsedBuy It Now

System Sensor 5451 Heat Detector Fix 135° F + Rate-Of-Rise Fire Alarm

$24.99
Free ShippingAcworth, US
av_exchange
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99.8%Excellent· 2.2k
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White Industrial Smoke Detector Sensor Head, Smoke Detectors
UsedBuy It NowBest Offer

White Industrial Smoke Detector Sensor Head, Smoke Detectors

White Industrial Smoke Detector Sensor Head, Smoke Detectors

$10.00
See listingFishkill, US
firealalarms222
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Firex ICCA 2650-760 Duct Smoke Detector Smoke Alarm Ionization Detector
UsedBuy It Now

Firex ICCA 2650-760 Duct Smoke Detector Smoke Alarm Ionization Detector

Firex ICCA 2650-760 Duct Smoke Detector Smoke Alarm Ionization Detector Great condition as shown in photos Check out my store for more FireX Thank you and Happy Bidding!

$24.99
+$8.40San Antonio, US
fire-alarm-warehouse
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100.0%Excellent· 3.5k
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System Sensor 2400 Smoke Detector-Lot of 17
UsedBuy It NowBest Offer

System Sensor 2400 Smoke Detector-Lot of 17

Lot of 17 system sensor model no 2400 smoke detectors. All tested and working. Shoot me an offer

$150.00
See listingWoodbridge, US
shablagoo123
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100.0%Excellent· 26
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Silent Knight by Honeywell Analog Photoelectric Smoke Sensor SD505-APS
UsedBuy It NowBest Offer

Silent Knight by Honeywell Analog Photoelectric Smoke Sensor SD505-APS

Price is for (1) SD505-APS smoke detector. Smoke detectors came from a memory care facility that upgraded due to expansion. System was functional, normal, and had just passed annual inspection before removal

$80.00
See listingSan Marcos, US
trentlewis06
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100.0%Excellent· 86
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Pack of 18 pcs Apollo series optical smoke detector 55000-650APO
UsedBuy It NowBest Offer

Pack of 18 pcs Apollo series optical smoke detector 55000-650APO

Used but in very good condition. Pack of 18 units.

$375.00
See listingOrlando, US
coolstufffinders22
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100.0%Excellent· 31
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Honeywell Photoelectric Smoke Detector Head w/ Base, Model/MPN TC906A1002
UsedBuy It NowBest Offer

Honeywell Photoelectric Smoke Detector Head w/ Base, Model/MPN TC906A1002

Sold as is! Working when uninstalled. Comes with the base.

$85.99
See listingGreenwood, US
dothemostllc
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100.0%Excellent· 3
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SYSTEM SENSOR 2151 CONVENTIONAL PHOTOELECTRIC SMOKE DETECTOR W/B110LP BASE
UsedBuy It Now

SYSTEM SENSOR 2151 CONVENTIONAL PHOTOELECTRIC SMOKE DETECTOR W/B110LP BASE

SYSTEM SENSOR 2151 CONVENTIONAL PHOTOELECTRIC SMOKE DETECTOR W/B110LP BASE. Condition is Used. Shipped with USPS Ground Advantage.

$35.00
+$6.50Hayward, US
fairpricedealer
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100.0%Excellent· 193
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Honeywell HFS-P Tested And Guaranteed
UsedBuy It NowBest Offer

Honeywell HFS-P Tested And Guaranteed

Removed from working system. All detectors have been cleaned and tested. The heads are paired with an A3509-000 base.

$35.00
See listingKansas City, US
kenny101
Feedback
100.0%Excellent· 1.4k
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White Industrial Smoke Detector Sensor Head, Smoke Detectors
-5%
UsedBuy It NowBest Offer

White Industrial Smoke Detector Sensor Head, Smoke Detectors

White Industrial Smoke Detector Sensor Head, Smoke Detectors

$10.00$10.51-5%

You save $0.51

See listingFishkill, US
firealalarms222
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GE Security Smoke Detector Four-wire ESL 500 Series 541CXT Working
UsedBuy It Now

GE Security Smoke Detector Four-wire ESL 500 Series 541CXT Working

GE Security Smoke Detector Four-wire ESL 500 Series 541CXT Working This came out of a working system from what I was told. I have a couple different models that I listed. I’ve sold a few and had no problems. Please review all photos before purchasing. Shipping is free with tracking. Good luck Bin# 21

$21.99
Free ShippingWarwick, US
mtps-tools
Feedback
99.9%Excellent· 3.3k
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Siemens FPT-11 Heat Detector Head MPN FPT-11, Heat Detectors
UsedBuy It NowBest Offer

Siemens FPT-11 Heat Detector Head MPN FPT-11, Heat Detectors

Siemens FPT-11 Heat Detector Head MPN FPT-11, Heat Detectors

$10.00
See listingFishkill, US
firealalarms222
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OSID OSI-R Reflective Imaging Beam Smoke Detector Conventional ^
UsedBuy It NowBest Offer

OSID OSI-R Reflective Imaging Beam Smoke Detector Conventional ^

Pre-owned. Never installed. Light scratches in areas from being stored. Includes: Smoke detector, front cover, rear cover, and reflector. Detection Range: 16.4 ft to 328 ft (5 m to 100 m) Operating Voltage: 10.2 to 32 VDC (Nominal 12/24 VDC) Field of View (FOV): 12° (Wide angle) Adjustment Angle: 50° Horizontal, 20° Vertical (Internal "Eyeball") Sensitivity Levels: 4 Levels: 25%, 30%, 40%, and 50% IP Rating: IP55 Temperature Range: -4°F to 131°F (-20°C to +55°C) See Photos for Details Thank you for viewing our item.

$289.95
Free ShippingOley, US
honestproductdeals
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100.0%Excellent· 9.4k
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HEKATRON SMOKE DETECTOR ORM 130AY
UsedBuy It NowBest Offer

HEKATRON SMOKE DETECTOR ORM 130AY

Make: HEKATRON. Part No.: ORM 130AY.

$129.00
Free ShippingBhavnagar HO, IN
bestmarines
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100.0%Excellent· 107
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SERIES 65A  55000-326 PHOTOELECTRIC SMOKE DETECTOR WITH BASE 5 PCS LOT
-5%
Seller refurbishedBuy It NowBest Offer

SERIES 65A 55000-326 PHOTOELECTRIC SMOKE DETECTOR WITH BASE 5 PCS LOT

$331.55$349.00-5%

You save $17.45

Free ShippingBhavnagar HO, IN
yamshipingtrading
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100.0%Excellent· 52
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