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12v alarm siren

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Home / Electrical Components / 12v alarm siren for sale – 96 used, around £11 | For Sale UK
12v volt piezo siren - 2, 12

12v volt piezo siren - 2, 12

£8.50
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Heavy duty reversing alarm - duty,

Heavy duty reversing alarm - duty,

£14.99
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12v battery backup siren horn - backup,

12v battery backup siren horn - backup,

£13.29
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12v tone siren emergency - 12v,

12v tone siren emergency - 12v,

£10.99
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100w 12v tone sound car - 12v,

100w 12v tone sound car - 12v,

£11.00
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2pcs 12v piezo buzzer alarm - 2pcs,

2pcs 12v piezo buzzer alarm - 2pcs,

£2.51
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Wired loud alarm - wired, 110db

Wired loud alarm - wired, 110db

£7.41
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2pcs 12v piezo buzzer alarm - piezo,

2pcs 12v piezo buzzer alarm - piezo,

£2.99
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Wired loud alarm - alarm, 110db

Wired loud alarm - alarm, 110db

£10.39
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2pcs 12v piezo buzzer - 12v, alarm

2pcs 12v piezo buzzer - 12v, alarm

£2.99
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2pcs 12v piezo - 12v, buzzer

2pcs 12v piezo - 12v, buzzer

£2.61
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Wired loud alarm horn 110db - loud,

Wired loud alarm horn 110db - loud,

£8.49
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Wired loud alarm - wired,

Wired loud alarm - wired,

£7.99
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Motion sensor alarm - sensor, 12v/240v

Motion sensor alarm - sensor, 12v/240v

£50.62
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Van security alarm - security, fit

Van security alarm - security, fit

£31.90
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12v battery backup siren for - 12v,

12v battery backup siren for - 12v,

£16.95
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12v 120db mini loud wired - mini,

12v 120db mini loud wired - mini,

£3.60
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Piezo siren 12v sounder - sounder, alarm

Piezo siren 12v sounder - sounder, alarm

£7.79
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Universal 12v motor driven - 12v,

Universal 12v motor driven - 12v,

£7.26
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Car reverse siren horn - car,

Car reverse siren horn - car,

£8.97
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12v led security alarm - led,

12v led security alarm - led,

£4.99
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Tone miniature panel - tone,

Tone miniature panel - tone,

£9.49
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12v 120db loud - dc, indoor

12v 120db loud - dc, indoor

£5.99
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100w 12v tone - 100w,

100w 12v tone - 100w,

£10.75
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Wired strobe siren 120db - 120db, sound

Wired strobe siren 120db - 120db, sound

£4.20
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Epathchina dc12v 200w - 200w, sound

Epathchina dc12v 200w - 200w, sound

£92.22
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12v battery backup siren for - 12v,

12v battery backup siren for - 12v,

£12.82
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12v 130db wireless electronic - 130db,

12v 130db wireless electronic - 130db,

£17.99
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12v 120db battery backup siren - battery,

12v 120db battery backup siren - battery,

£13.49
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12v 120db battery - battery, backup

12v 120db battery - battery, backup

£13.99
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120db 12v mini horn - dc,

120db 12v mini horn - dc,

£13.49
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Universal 12v motor - driven, air

Universal 12v motor - driven, air

£13.49
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Car truck reverse - car,

Car truck reverse - car,

£13.45
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2pcs 12v piezo buzzer alarm - 2pcs,

2pcs 12v piezo buzzer alarm - 2pcs,

£3.49
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12v sound loud car van - 7,

12v sound loud car van - 7,

£10.99
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Dc12v 120db mini loud wired - dc12v,

Dc12v 120db mini loud wired - dc12v,

£13.49
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Dc12v 200w sound loud - sound,

Dc12v 200w sound loud - sound,

£123.99
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3am 922 000 971 hella - 3am, trumpet

3am 922 000 971 hella - 3am, trumpet

£18.78
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12v battery backup siren - backup,

12v battery backup siren - backup,

£13.49
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12v car warning alarm battery - warning,

12v car warning alarm battery - warning,

£13.49
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Wired loud alarm - loud, 110db

Wired loud alarm - loud, 110db

£10.19
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2pcs 12v piezo buzzer - buzzer, alarm

2pcs 12v piezo buzzer - buzzer, alarm

£2.49
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Technaxx universal car alarm - car,

Technaxx universal car alarm - car,

£29.99
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100w sound 12v - sound, car

100w sound 12v - sound, car

£13.01
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Piezo siren 12v sounder alarm - siren,

Piezo siren 12v sounder alarm - siren,

£7.59
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100w 12v tone sound car - 100w,

100w 12v tone sound car - 100w,

£8.00
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Outdoor alarm siren and - alarm,

Outdoor alarm siren and - alarm,

£34.00
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12v 120db mini - 120db, wired

12v 120db mini - 120db, wired

£4.29
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Wired loud alarm horn 110db - wired,

Wired loud alarm horn 110db - wired,

£7.90
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100w 12v car - 12v, alarm

100w 12v car - 12v, alarm

£11.00
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Cqr somach electronically - cqr,

Cqr somach electronically - cqr,

£14.00
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Outdoor siren indoor - siren,,

Outdoor siren indoor - siren,,

£13.00
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Universal 12v motor driven - motor,

Universal 12v motor driven - motor,

£7.40
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Outdoor alarm siren and - alarm,

Outdoor alarm siren and - alarm,

£32.10
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2pcs 12v piezo - 12v, buzzer

2pcs 12v piezo - 12v, buzzer

£4.00
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Miniature piezo siren 12v - miniature,

Miniature piezo siren 12v - miniature,

£6.09
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12v car alarm - 12v,

12v car alarm - 12v,

£11.00
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2pcs 12v piezo buzzer alarm - 2pcs,

2pcs 12v piezo buzzer alarm - 2pcs,

£3.74
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12v 120db mini - 120db, loud

12v 120db mini - 120db, loud

£4.74
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12v siren for car - siren,

12v siren for car - siren,

£14.95
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12v led security alarm - led,

12v led security alarm - led,

£8.80
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12v siren for car alarms - siren,

12v siren for car alarms - siren,

£13.95
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12v sound loud car warning - car,

12v sound loud car warning - car,

£10.99
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Sounds 90dba panel mount - panel,

Sounds 90dba panel mount - panel,

£9.49
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Tone 12v 100w sound car - 7,

Tone 12v 100w sound car - 7,

£13.49
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Siren tone for car - siren, alarm

Siren tone for car - siren, alarm

£13.95
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Universal 12v motor driven air - 12v,

Universal 12v motor driven air - 12v,

£7.14
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Siren 6tone for car - car, 12v

Siren 6tone for car - car, 12v

£14.95
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Dc12v car anti - car,

Dc12v car anti - car,

£9.56
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Alarm horn siren buzzer - alarm,

Alarm horn siren buzzer - alarm,

£7.67
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2pcs 12v piezo buzzer - buzzer, alarm

2pcs 12v piezo buzzer - buzzer, alarm

£2.95
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12v 24v truck - 12v-24v, vehicles

12v 24v truck - 12v-24v, vehicles

£13.49
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Sound tone loud vip - tone,

Sound tone loud vip - tone,

£11.00
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Wired loud alarm horn - wired,

Wired loud alarm horn - wired,

£10.80
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Loud electric motor driven - loud,

Loud electric motor driven - loud,

£8.39
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100w 12v tone - 100w,

100w 12v tone - 100w,

£10.79
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12v siren strobe - siren,

12v siren strobe - siren,

£31.90
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Wired strobe siren - wired, 120db

Wired strobe siren - wired, 120db

£5.79
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12v 120db mini loud - 120db,

12v 120db mini loud - 120db,

£5.45
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Universal 12v motor driven - universal,

Universal 12v motor driven - universal,

£9.79
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2pcs 12v piezo buzzer alarm - 2pcs,

2pcs 12v piezo buzzer alarm - 2pcs,

£2.89
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Car truck reverse - reverse, warning

Car truck reverse - reverse, warning

£11.00
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100w 12v tone - 12v, 7

100w 12v tone - 12v, 7

£11.28
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12v 110db two tone - 12v,

12v 110db two tone - 12v,

£8.00
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Universal 12v motor driven air - motor,

Universal 12v motor driven air - motor,

£8.41
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Piezo siren 12v sounder alarm - piezo,

Piezo siren 12v sounder alarm - piezo,

£12.02
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12v 120db mini loud wired - 12v,

12v 120db mini loud wired - 12v,

£13.49
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12v high water level bilge - 12v,

12v high water level bilge - 12v,

£18.24
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120db car battery - battery, siren

120db car battery - battery, siren

£12.82
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12v reverse siren - 12v, warning

12v reverse siren - 12v, warning

£11.46
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12v sound loud car - car, warning

12v sound loud car - car, warning

£11.00
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Wired strobe siren 120db - siren, sound

Wired strobe siren 120db - siren, sound

£5.84
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Tone 12v 100w sound car - tone,

Tone 12v 100w sound car - tone,

£11.00
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Cqr alto grade 3 - grade,

Cqr alto grade 3 - grade,

£14.99
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12v 24v reversing - 24v, alarm

12v 24v reversing - 24v, alarm

£10.99
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Universal 12v siren tone - siren, 1

Universal 12v siren tone - siren, 1

£12.82
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📊96 listings · from £2.49 · avg £13.45
⚠️ These listings were last updated more than 18 days ago. Search for fresh listings

Browse 96 12v alarm siren listings currently in our index. Prices range from £2.49 to £123.99, with an average of £13.45. 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 12v alarm siren →

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Everything you need to know about 12v alarm siren

Whether you are looking for a brand-new or second-hand 12v alarm siren, 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 £2.49, while premium listings can reach £123.99 — giving you a wide budget spread to work with. The average price of £13.45 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.

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