Solar dummy alarm box
Updated: 20.10.2026
The LED has gone dark, and the listing still talks about years from AA cells or a panel on the lid. A solar dummy alarm box is one way to keep that flash going, and a battery housing is the other. You have already accepted a decoy, so this page is only about power. Prices sit on the [dummy alarm system comparison](/hub/burglar-protection/dummy-alarm-system). The listings and public UK reviews were read on 19 October 2026. This is not a lab test. A qualifying purchase can earn us a commission at no extra cost to you.
The LED has gone dark, and the listing still talks about years from AA cells or a panel on the lid. A solar dummy alarm box is one way to keep that flash going, and a battery housing is the other.
The LED has gone dark, and the listing still talks about years from AA cells or a panel on the lid. A solar dummy alarm box is one way to keep that flash going, and a battery housing is the other. You have already accepted a decoy, so this page is only about power. Prices sit on the dummy alarm system comparison. The listings and public UK reviews were read on 19 October 2026. This is not a lab test. A qualifying purchase can earn us a commission at no extra cost to you.
Our top picks
| Badge | Product | Power | Cells | Light | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Yale Yale AC-DBX dummy siren | Battery | 2 AA included | Flashing LED | 9.1 | about £22.03 | View offer |
| Best value |  QUANAN QUANAN blue dummy alarm box | Battery | 3 AA, pack unstated | Flashing LED | 8.2 | about £19.99 | View offer |
| Alternative |  Maclean Maclean DC3300 solar dummy | Solar and battery | 4 AA claimed, reviews say 3 | 3 claimed, reviews say 1 | 6.8 | about £21.66 | View offer |
On this page
What the battery boxes actually ask for
The Yale AC-DBX takes two AA cells, and the bullets say they are included. Switch it on before you fit it. The Nedis takes three AA cells at 4.5 V, and they are not included. The blue box specifies three AA at 4.5 V and does not say they are in the pack. A review says the instructions mention four cells while the holder takes three. The SD rectangle does not state a cell size. Opening the cover later is on the how to fit a dummy alarm system page.
What up to three years survived in the reviews
Treat up to three years as a seller claim. The Yale bullets use it for the two included AA cells. Nothing in these UK reviews is a timed test of three years on a wall. Other decoy sellers claim about two to four years from two AA cells. That is the same kind of claim, not a measurement of these boxes.
A review on the blue AE-BX01 reported about three weeks of light. That is one buyer, not a lab average, and it is the only duration stated in this file. A snapshot of £19.99 does not stretch a cell. One Yale UK review, not a UV test, said solar casings yellowed in 12 to 18 months while that battery box had not. Do not treat yellowing as universal.
When a solar top helps, and when the listing is the problem
The Maclean DC3300 is the solar dummy here, at £21.66. Bullets say three LEDs and four AA cells, not included, with no IP code. UK reviews say one LED and a three-cell holder. One review mentions a small panel keeping the cells charged. That is a charger, not a measured winter runtime. Ignore table rows that add 50 dB, a PIR, a remote, and 12 V.
Lamp notes from the Crime Prevention Website say winter and shade cut runtime. Use that only as a rule of thumb for a north-facing eaves in December. If the parcel has one LED and three cells, photograph the holder. The clash sits on the dummy alarm system buying guide, under section 11 of the Consumer Rights Act 2015.
Do not invent a power supply
Comments about a mains adaptor, a torch charger, or a 12 V module show dissatisfaction. They are not a method. A cut-down plug can leave a live conductor in a battery housing. If the cells die in weeks, replace them or choose another box.
The SD decagon states no sounder and no light, at £24.99, so a dark box needs no cells. Take the Yale if you want cells in the pack and will treat up to three years as a claim. Take the Nedis if you will buy three AA cells. Take the Maclean only after the counts match, and only if the lid sees daylight. Jobs sit on the best dummy alarm system page. Insurance stays on the dummy alarm system vs real alarm page.
Common questions
Will a solar dummy stay lit through a UK winter?
There is no measured winter runtime for the Maclean in this file. A solar lid only charges the cells behind it, and a shaded UK wall in December is a weak charge. The lamp notes are a rule of thumb, not a bell-box test.
How long do batteries last in a flashing dummy siren?
The Yale listing claims up to three years from two AA cells. That is a claim, not a timed test here. The only duration a review in this set states is about three weeks, on the blue AE-BX01. Plan to open the cover.
Does the Yale box need batteries bought separately?
No. The AC-DBX bullets say two AA cells are included. Switch it on before you fit it. The Nedis and the Maclean state that batteries are not included. The blue box does not say its three AA cells are in the pack.
Why do reviews say three AA cells when the listing says four?
On the Maclean the bullets say four AA cells and three LEDs. UK reviews say one LED and a three-cell holder. On the blue box, a review says the instructions mention four cells while the holder takes three. Count the springs, and return it if they do not match the bullets.
The LED has stopped. Is the box broken or flat?
Start with the cells and the switch. A dark LED is often a flat pack or a unit that was never switched on. The three-week review on the blue box is a reason to suspect the cells first. Shade can darken a solar lid too.
Can I wire the LED to a plug-in adaptor?
No. Reviews that mention a torch charger, a cut-down adaptor, or a 12 V module show frustration, not a safe method. These housings have no stated mains inlet. Replace the cells, or choose the decagon so there is no LED to feed.
Related pages
Sources
Public UK sources from the research digest. Listing prices, stars, and review counts are from amazon.co.uk on 19 October 2026.
- Yale AC-DBX dummy siren (retrieved 19 October 2026)
- Consumer Rights Act 2015, section 11 (retrieved 19 October 2026)
- NSI on PD 6662:2017 for intruder and hold-up alarms (retrieved 19 October 2026)
- NSI, intruder alarm systems (retrieved 19 October 2026)
- Redditch Borough Council home security guide, August 2021 (retrieved 19 October 2026)
- CSA Group, ingress protection (IP) testing (retrieved 19 October 2026)
- MoneySuperMarket, burglar alarms and home insurance (retrieved 19 October 2026)
- Aviva, which alarm system for your home (retrieved 19 October 2026)