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Smoke detector fire alarm - smoke,

Smoke detector fire alarm - smoke,

$14.89
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Pack kidde 20sd10 smoke - kidde,

Pack kidde 20sd10 smoke - kidde,

$89.99
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Smoke detectors battery - detectors,

Smoke detectors battery - detectors,

$49.99
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Siterwell gs525a compact 10 - gs525a-mg,

Siterwell gs525a compact 10 - gs525a-mg,

$59.88
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Pack year battery smoke - 2-pack,

Pack year battery smoke - 2-pack,

$42.99
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Universal security instruments - universal,

Universal security instruments - universal,

$16.92
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Pack smoke detector - pack,

Pack smoke detector - pack,

$13.59
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Pack smoke alarm - 4,

Pack smoke alarm - 4,

$24.95
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Sense sc07 smoke carbon - x-sense, &

Sense sc07 smoke carbon - x-sense, &

$139.99
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Brk first alert 9120b smoke - first,

Brk first alert 9120b smoke - first,

$17.99
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Pack smoke alarm detectors - 10-pack,

Pack smoke alarm detectors - 10-pack,

$39.99
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Pack general smoke - pack,

Pack general smoke - pack,

$28.99
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Pack smoke alarm - 6,

Pack smoke alarm - 6,

$44.99
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Fire lite sd355 photoelectric - fire-lite,

Fire lite sd355 photoelectric - fire-lite,

$33.00
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Pack general purpose smoke - 4-pack,

Pack general purpose smoke - 4-pack,

$24.99
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New honeywell silent knight - new,

New honeywell silent knight - new,

$199.00
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Sense smoke alarm - wi-fi,

Sense smoke alarm - wi-fi,

$21.88
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Pcs smoke detector fire - smoke,

Pcs smoke detector fire - smoke,

$12.99
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Pack year battery smoke - 10-year,

Pack year battery smoke - 10-year,

$44.00
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Carbon monoxide detector - detector, smoke

Carbon monoxide detector - detector, smoke

$14.99
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Pack smoke alarm detector - pack,

Pack smoke alarm detector - pack,

$16.18
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Usi year battery in - usi, 10-year

Usi year battery in - usi, 10-year

$26.99
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Smoke detector fire - detector, alarm

Smoke detector fire - detector, alarm

$7.74
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Smoke detectors battery - 4,

Smoke detectors battery - 4,

$25.99
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First alert 9120b6cp - first, 9120b6cp/

First alert 9120b6cp - first, 9120b6cp/

$99.26
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2025 new arrival siterwell - arrival,

2025 new arrival siterwell - arrival,

$193.22
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Smoke detectors battery - detectors,

Smoke detectors battery - detectors,

$36.99
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Carbon monoxide detector smoke - carbon,

Carbon monoxide detector smoke - carbon,

$9.82
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Siterwell gs525a mg - pc,

Siterwell gs525a mg - pc,

$99.88
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Smoke detectors battery - 10,

Smoke detectors battery - 10,

$49.99
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Pack sense fi smoke - pack, x-sense

Pack sense fi smoke - pack, x-sense

$54.88
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Silent knight sd505 aps - knight, sd505-aps

Silent knight sd505 aps - knight, sd505-aps

$55.00
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Brk sled177 candela - brk,

Brk sled177 candela - brk,

$22.00
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Smoke carbon monoxide - smoke,

Smoke carbon monoxide - smoke,

$9.75
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Usi hardwired and year - hardwired,

Usi hardwired and year - hardwired,

$17.43
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Siterwell smoke detector 10 - siterwell, detector,

Siterwell smoke detector 10 - siterwell, detector,

$199.15
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New notifier fsp 851 smoke - notifier, fsp-851

New notifier fsp 851 smoke - notifier, fsp-851

$39.99
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Carbon monoxide detector smoke - monoxide,

Carbon monoxide detector smoke - monoxide,

$8.95
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Kidde i9010 smoke alarm white - smoke,

Kidde i9010 smoke alarm white - smoke,

$28.00
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Pack photoelectric smoke - photoelectric,

Pack photoelectric smoke - photoelectric,

$27.50
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Pack general purpose - purpose, smoke

Pack general purpose - purpose, smoke

$25.99
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Brk first alert - first,

Brk first alert - first,

$20.99
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Nib notifier fsp 851 - nib!, fsp-851

Nib notifier fsp 851 - nib!, fsp-851

$78.50
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Sense sc07 pack smoke - sc07, 6-pack

Sense sc07 pack smoke - sc07, 6-pack

$139.99
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Kidde smart smoke co - kidde,

Kidde smart smoke co - kidde,

$44.95
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Firex smoke alarm item - alarm, #46182

Firex smoke alarm item - alarm, #46182

$18.50
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Fire lite sd365 - fire-lite,

Fire lite sd365 - fire-lite,

$60.00
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Kidde hardwired interconnected - kidde,

Kidde hardwired interconnected - kidde,

$76.95
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New improved smoking - new,

New improved smoking - new,

$79.99
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Portable co detector - 5-in-1,

Portable co detector - 5-in-1,

$33.99
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Fire lite sd365 - fire-lite, addressable

Fire lite sd365 - fire-lite, addressable

$55.00
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Pack kidde firex plug - 40, plug-in

Pack kidde firex plug - 40, plug-in

$500.00
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Kidde 20sdr battery - kidde,

Kidde 20sdr battery - kidde,

$19.88
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Usi electric 1 hardwired - usi, 2-in-1

Usi electric 1 hardwired - usi, 2-in-1

$19.19
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Hfp siemens fire alarm - siemens,

Hfp siemens fire alarm - siemens,

$44.99
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Kidde smacfex hardwired smoke - kidde,

Kidde smacfex hardwired smoke - kidde,

$24.95
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Usi year proof smoke alarm - 10,

Usi year proof smoke alarm - 10,

$59.90
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Notifier fsp 851 - fsp-851, smoke

Notifier fsp 851 - fsp-851, smoke

$39.99
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Kidde 30cuar detect smoke - kidde,

Kidde 30cuar detect smoke - kidde,

$32.99
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Hardwired 10 year - &, 10-year

Hardwired 10 year - &, 10-year

$43.95
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Hfpo siemens fire alarm - hfpo-11,

Hfpo siemens fire alarm - hfpo-11,

$229.00
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Fire lite sd355 photoelectric - sd355,

Fire lite sd355 photoelectric - sd355,

$40.67
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Pack smoke alarm - 2,

Pack smoke alarm - 2,

$15.59
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Kidde firex plug - kidde, plug-in

Kidde firex plug - kidde, plug-in

$13.49
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Brand new honeywell - brand,

Brand new honeywell - brand,

$68.99
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2gig smkt8 smoke heat and - smkt8,

2gig smkt8 smoke heat and - smkt8,

$54.99
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Kidde smoke detector hardwired - kidde,

Kidde smoke detector hardwired - kidde,

$35.00
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Kidde 30cua10 smoke carbon - kidde,

Kidde 30cua10 smoke carbon - kidde,

$37.99
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Usi year battery powered - usi,

Usi year battery powered - usi,

$17.90
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First alert hardwired smoke - alert,

First alert hardwired smoke - alert,

$21.78
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First alert model - first, smi100

First alert model - first, smi100

$14.99
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First alert brk smi100 - brk, smi100-ac

First alert brk smi100 - brk, smi100-ac

$136.00
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Empire smoke alarm fire - empire,

Empire smoke alarm fire - empire,

$25.00
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Sense smoke alarm 10 year - alarm,, 10-year

Sense smoke alarm 10 year - alarm,, 10-year

$18.99
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Year battery - (3-pack),

Year battery - (3-pack),

$44.99
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Packs kidde smoke - 6,

Packs kidde smoke - 6,

$89.19
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Kidde smoke alarm i9010 - alarm, 10

Kidde smoke alarm i9010 - alarm, 10

$24.99
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First alert brk 9120b - first,

First alert brk 9120b - first,

$21.99
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Kidde cob lp3 carbon - kn-cob-lp3,

Kidde cob lp3 carbon - kn-cob-lp3,

$17.99
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Google nest protect - google,

Google nest protect - google,

$306.52
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Notifier fsp 851 - notifier, fsp-851

Notifier fsp 851 - notifier, fsp-851

$34.00
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Smoke alarm detector home fire - smoke,

Smoke alarm detector home fire - smoke,

$11.89
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Smoke alarm detector home fire - smoke,

Smoke alarm detector home fire - smoke,

$7.87
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First alert brk smi100 - brk, smi100-ac

First alert brk smi100 - brk, smi100-ac

$195.99
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Photoelectric smoke alarm - photoelectric, 10

Photoelectric smoke alarm - photoelectric, 10

$32.88
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Usi smoke fire carbon - 3-in-1,

Usi smoke fire carbon - 3-in-1,

$39.00
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First alert 9120b - first,

First alert 9120b - first,

$31.99
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Usi pack year battery - 10-year,

Usi pack year battery - 10-year,

$49.90
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Fire lite sd365 addressable - sd365-iv,

Fire lite sd365 addressable - sd365-iv,

$160.00
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Kidde battery powered ring - aa, battery-powered

Kidde battery powered ring - aa, battery-powered

$29.99
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Brk smi100 smoke alarm - brk,

Brk smi100 smoke alarm - brk,

$17.99
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Sense smart fi smoke - x-sense, wi-fi

Sense smart fi smoke - x-sense, wi-fi

$26.99
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Sense smoke alarm - wi-fi,

Sense smoke alarm - wi-fi,

$44.88
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Siterwell hardwired - siterwell,

Siterwell hardwired - siterwell,

$47.00
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Notifier fst 951 intelligent - fst-951,

Notifier fst 951 intelligent - fst-951,

$36.99
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Pack new kidde firex - 6-pack,

Pack new kidde firex - 6-pack,

$155.00
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📊96 listings · from $7.74 · avg $57.75

Browse 96 fire detector listings currently in our index. Prices range from $7.74 to $500, with an average of $57.75. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about fire detector →

Try this: simplex fire alarm | fire alarm pull station | pigeon bird | fake owl | kidde firex smoke alarm | kidde smoke alarm | 2 carbon monoxide tester | wired smoke alarms | protect generation nest 2nd | alarms monoxide carbon

Shop by budget

< $25 $25 – $50 $50 – $100 $100 – $200 $200 – $500 > $500

Everything you need to know about fire detector

Whether you are looking for a brand-new or second-hand fire detector, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $7.74, while premium listings can reach $500 — giving you a wide budget spread to work with. The average price of $57.75 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

🔍 fire detector Search live on eBay