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Landlord smoke alarm requirements

Updated: 20 October 2026

You let a home in England, Wales or Northern Ireland, and an Amazon line that says the kit complies with UK law is not a kit list for all three. Landlord smoke alarm requirements split by nation. A sealed battery multi-pack that can start an English storey count cannot close a Welsh rental. Prices are amazon.co.uk listings captured on 19 October 2026, not a laboratory test, and a qualifying purchase can earn a commission at no extra cost to you. The [smoke alarm set comparison](/hub/fire-protection/smoke-alarm-set) is the product basket. If the home is in Scotland, use the [interlinked smoke alarm kit for Scotland](/hub/fire-protection/smoke-alarm-set/sub/smoke-alarm-set-for-scotland).

You let a home in England, Wales or Northern Ireland, and an Amazon line that says the kit complies with UK law is not a kit list for all three. Landlord smoke alarm requirements split by nation.

Our top picks

WISUALARM WISUALARM DHI-HY-SA20A 2-pack

Best overall

WISUALARM WISUALARM DHI-HY-SA20A 2-pack
6.8/10about £18.69
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XINDUM XINDUM SM11R4 bundle

Rank 2

XINDUM XINDUM SM11R4 bundle
8.8/10about £96.99
View offer
XINDUM XINDUM 2-smoke bundle

Best value

XINDUM XINDUM 2-smoke bundle
8.7/10about £69.48
View offer
On this page
  1. 1.Three rental duties, not one UK kit
  2. 2.What a battery set can and cannot carry
  3. 3.Buy for the nation of the house
  4. 4.Carbon monoxide, checks and the England penalty

Three rental duties, not one UK kit

England, Wales and Northern Ireland do not share one alarm list. England requires at least one smoke alarm on each storey used as living accommodation. The type is not prescribed, and interlink is not the minimum. From 1 October 2022 you repair a reported fault and you check the alarms on the day a new tenancy begins. Wales wants the smoke alarm on each storey on the dwelling’s electrical supply and linked to the other mains smoke alarms, from 1 December 2023. A sealed battery pack does not meet that wording. Northern Ireland private tenancies, new from 1 September 2024 and existing by 1 December 2024, need interlinked smoke in the living room and every circulation space, plus a kitchen heat alarm, on a sealed cell or hard-wired. The buying guide separates pack types.

What a battery set can and cannot carry

An English rental can start from a battery smoke alarm, and GOV.UK prefers a sealed cell. The WISUALARM pair at about £18.69, with a sealed cell claimed and no interlink, matches two separate smoke heads. It is not a Welsh fit and not a Northern Ireland fit. The ELRO ten-pack at about £53.88 uses a replaceable one-year cell. None of the twelve listings is a mains kit, so none closes a Welsh rental. For Northern Ireland, look at packs with a heat head: LINKD, the XINDUM packs at about £69.48 and about £96.99, and CPVAN. The HS21 also lists CR123A cells beside a sealed claim. The two XINDUM review counts are one shared text of 811.
WISUALARM WISUALARM DHI-HY-SA20A 2-pack

Testsieger

WISUALARM WISUALARM DHI-HY-SA20A 2-pack
6.8/10about £18.69
View offer

Buy for the nation of the house

No listing in this basket should be read as covering Scotland, England, Wales and Northern Ireland at once. Wales needs mains. England does not require interlink. Northern Ireland requires interlinked smoke and heat, on sealed cells or on a hard-wired supply, for private tenancies. If the portfolio crosses a border, split the order.

Carbon monoxide, checks and the England penalty

In England a carbon monoxide alarm is required for a fixed combustion appliance other than a gas cooker. In Wales a fixed gas cooker can fall inside a duty that covers gas, oil or solid fuel. In Northern Ireland the alarm follows the appliance or the flue, with BS EN 50292 as the installation guide, and it need not interlink. The England figure of £5,000 is the civil penalty cap after a remedial notice is not met, not an automatic fine. Wales uses the unfit-dwelling rules. Keep the tenancy-start check in writing.

Common questions

Why will a battery set fail in a Welsh rental?
Welsh rules require the smoke alarm on each storey to run from the dwelling’s electrical supply and to link to the other mains smoke alarms. A sealed lithium pack, a radio bundle and a Wi-Fi base are not that supply. None of the twelve listings is a mains kit, so none of them closes the duty on its own. The reviews can be strong and the Welsh obligation can still be open. Specify a mains interlinked system, and keep the invoice or certificate.
What changed for Northern Ireland private tenancies in 2024?
New private tenancies from 1 September 2024, and existing ones by 1 December 2024, need interlinked smoke alarms in the main living room and every circulation space, plus a heat alarm in every kitchen. Power is hard-wired or a sealed long-life cell. A carbon monoxide alarm is required for a fixed combustion appliance or a flue, and it need not join the fire-alarm link. The duty stays with the landlord even when an agent manages the let. It is not a rule for owner-occupiers in their own homes.
Does England require the alarms to be interlinked?
No. The English landlord minimum is a smoke alarm on each living storey, not a radio link. A pair of standalone sealed smoke alarms can match a small house on that test. Interlink is still useful if you want every head to sound together, and it is required for a Northern Ireland private tenancy, not by this English regulation. Do not skip a link in Belfast because an English booklet allows separate heads.
Does Wales treat a gas cooker differently from England?
Yes. England excludes a gas cooker from the carbon monoxide duty and includes other fixed combustion appliances in living accommodation. Wales refers to rooms with a gas, oil or solid-fuel appliance, and a fixed gas cooker can fall inside that wording. Northern Ireland follows the appliance or the flue, with BS EN 50292 as the installation guide, and does not require the CO alarm to interlink. Fit the alarm for the nation of that property.
When does the England £5,000 figure apply?
It is the civil penalty cap for a breach of a remedial notice, not a fine issued automatically because an alarm was missing this morning. The council serves the notice first. If you then fail to put it right, the penalty can be up to £5,000 for that breach. Wales does not use this notice as its route. Repair reported faults promptly, and keep a record of the check you made at the start of the tenancy.

Related pages

How to fit smoke alarms

Smoke alarm set

Best smoke alarm set from the twelve captured UK packs

Smoke alarm set: how to choose the pack for UK rooms

Interlinked smoke alarm kit Scotland: the room count

Sources

Public UK sources for this comparison, last checked on 19 October 2026. Listing prices and ratings are the amazon.co.uk pages captured the same day.

  1. The Smoke and Carbon Monoxide Alarm (England) Regulations 2015, regulation 4 (retrieved 19 October 2026)
  2. GOV.UK smoke and carbon monoxide alarm Q&A for landlords (retrieved 19 October 2026)
  3. Scottish Government: fire and smoke alarms in Scottish homes (retrieved 19 October 2026)
  4. Scottish Government: where and what to buy (retrieved 19 October 2026)
  5. Tolerable standard guidance: fire and carbon monoxide detection (retrieved 19 October 2026)
  6. Renting Homes (Fitness for Human Habitation) (Wales) Regulations 2022, regulation 5 (retrieved 19 October 2026)
  7. Northern Ireland: smoke, heat and carbon monoxide alarms in private tenancies (retrieved 19 October 2026)
  8. GOV.UK: fire safety in the home (retrieved 19 October 2026)