Roundups6. Home comfort, heating

6. Home comfort, heating

Best smoke alarms for UK homes compared in 2026

Smoke alarms vary in sensor type, battery design and the controls they offer. This roundup compares five models by pack count, sensing technology, battery and stated life, indicators, intended rooms, stated standards and price, giving you a clear view of how each one differs before you decide which suits your home.

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Our Top Pick

Best all-rounder

X-Sense's SD11 combines a photoelectric sensor, a 10-year sealed battery, EN14604 stated, an LED indicator and a silence button for £11.99.

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Smoke alarms at a glance

Product	Brand	Price	Retailer	Pack count	Sensor type	Battery	Battery life	Controls/indicators	Mounting/intended rooms	Standard	Price
FireAngel FA6620 Optical Smoke Alarm	FireAngel	£12.98Checked 6 Nov 2026, 17:00 UTC	Amazon UK	1	Optical	—	10-year battery	—	Replacement for FA ST-622/ST-620	—	£12.98
TEFLERON Photoelectric Smoke Alarm 2-Pack	TEFLERON	£15.49Checked 6 Nov 2026, 17:00 UTC	Amazon UK	2	Photoelectric	Replaceable	Stated 5 years (10-year life stated)	Silence button, LED	—	EN14604 stated	£15.49
BLACK+DECKER Optical Smoke Alarm	BLACK+DECKER	£6.79Checked 6 Nov 2026, 17:00 UTC	Amazon UK	1	Optical	9V replaceable, included	—	Low-battery warning	Hallways, landings, bedrooms and living rooms	EN14604 stated	£6.79
X-Sense SD11 Smoke Alarm	X-Sense	£11.99Checked 6 Nov 2026, 17:00 UTC	Amazon UK	1	Photoelectric	Sealed	10 years	LED indicator, silence button	—	EN14604 stated	£11.99
WISUALARM Smoke Alarm	WISUALARM	£9.99Checked 6 Nov 2026, 17:00 UTC	Amazon UK	1	Split-spectrum	Sealed	10 years	Remote mute	—	EN14604 and UKCA stated	£9.99

Please check the Amazon page for the current price.

Smoke alarms compared

Best FireAngel replacement

FireAngel FA6620 Optical Smoke Alarm

A single optical smoke alarm with a 10-year battery, listed as a replacement for the FA ST-622 and ST-620.

The FireAngel FA6620 is a single alarm with optical sensing and a 10-year battery. Product details describe it as less prone to cooking-fume false alerts, and it is listed as a replacement for the FA ST-622 and ST-620. At £12.98, it is a straightforward choice if you are swapping an existing FireAngel unit.

Price£12.98Checked 6 Nov 2026, 17:00 UTC

Key Details

Pack count: 1
Sensor type: Optical
Battery life: 10-year battery
Mounting/intended rooms: Replacement for FA ST-622/ST-620
Price: £12.98

What We Like

10-year battery
Listed as a replacement for FA ST-622/ST-620

Considerations

Costs £1.00 more than the X-Sense SD11 for a single alarm

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Best multipack

TEFLERON Photoelectric Smoke Alarm 2-Pack

A two-pack of photoelectric alarms with a silence button, LED and EN14604 stated.

This TEFLERON pack includes two photoelectric smoke alarms, each with a silence button and an LED. A 10-year life is stated, and the replaceable battery is stated to last 5 years. EN14604 is stated. At £15.49 for two, it is the lowest cost per alarm among the multi-alarm options here.

Price£15.49Checked 6 Nov 2026, 17:00 UTC

Key Details

Pack count: 2
Sensor type: Photoelectric
Battery: Replaceable
Battery life: Stated 5 years (10-year life stated)
Controls/indicators: Silence button, LED
Standard: EN14604 stated
Price: £15.49

What We Like

Two alarms in one pack
Silence button and LED

Considerations

Battery is stated to last 5 years, half the stated alarm life

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Best budget buy

BLACK+DECKER Optical Smoke Alarm

A £6.79 optical alarm with a 9V battery included, a low-battery warning and EN14604 stated.

The BLACK+DECKER alarm is the cheapest here at £6.79. It is a single optical alarm with a replaceable 9V battery included, a low-battery warning and EN14604 stated. It is listed for hallways, landings, bedrooms and living rooms, which makes it a simple, low-cost option for several parts of the home.

Price£6.79Checked 6 Nov 2026, 17:00 UTC

Key Details

Pack count: 1
Sensor type: Optical
Battery: 9V replaceable, included
Controls/indicators: Low-battery warning
Mounting/intended rooms: Hallways, landings, bedrooms and living rooms
Standard: EN14604 stated
Price: £6.79

What We Like

Lowest price at £6.79
9V battery included with low-battery warning

Considerations

Replaceable battery rather than a sealed 10-year one

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Best all-rounder

X-Sense SD11 Smoke Alarm

A photoelectric alarm with a 10-year sealed battery, LED indicator, silence button and EN14604 stated.

The X-Sense SD11 is a single photoelectric alarm with a 10-year sealed battery, so there is no battery to swap. It has an LED indicator and a silence button, and EN14604 is stated. At £11.99, it covers the main features in one unit and sits in the middle of the price range here.

Price£11.99Checked 6 Nov 2026, 17:00 UTC

Key Details

Pack count: 1
Sensor type: Photoelectric
Battery: Sealed
Battery life: 10 years
Controls/indicators: LED indicator, silence button
Standard: EN14604 stated
Price: £11.99

What We Like

10-year sealed battery
LED indicator and silence button

Considerations

Costs £5.20 more than the BLACK+DECKER alarm

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Best for remote mute

WISUALARM Smoke Alarm

A sealed 10-year battery alarm with split-spectrum technology, remote mute and EN14604 and UKCA stated.

The WISUALARM has a sealed 10-year battery and uses split-spectrum technology. A remote mute is included, which is handy for alarms mounted out of easy reach. EN14604 and UKCA are both stated. At £9.99, it is the second-cheapest option here and the only one listing UKCA.

Price£9.99Checked 6 Nov 2026, 17:00 UTC

Key Details

Pack count: 1
Sensor type: Split-spectrum
Battery: Sealed
Battery life: 10 years
Controls/indicators: Remote mute
Standard: EN14604 and UKCA stated
Price: £9.99

What We Like

Remote mute included
EN14604 and UKCA stated

Considerations

Costs £3.20 more than the BLACK+DECKER alarm

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