X-Sense SC07-WX Wi-Fi Smoke and CO Alarm

Last updated: 5 October 2026

What the X-Sense SC07-WX is

It is one unit with two sensors inside: a photoelectric sensor for smoke and an electrochemical sensor for carbon monoxide. It joins your router over 2.4GHz Wi-Fi, with no hub needed.

It also fills the gap left by the Google Nest Protect, which Google announced it was discontinuing on 28 March 2025.

What it does

• Phone alerts: the X-Sense Home Security app, for iPhone and Android, pushes smoke and CO warnings.
• A loud siren: X-Sense rates the alarm at 85dB or more at 3 metres.
• Silence: a nuisance alarm can be hushed for up to 9 minutes.
• Interconnection: X-Sense says it links with its other Wi-Fi alarms on the same app account.
• A replaceable battery: one CR123A lithium cell, which you swap when it runs low.

Key facts about the X-Sense smoke and CO alarm

• Price: £45.99 for one alarm on Amazon UK on 5 October 2026
• Standards: EN 14604 (smoke) and EN 50291 (CO), as listed by X-Sense
• Battery: one replaceable CR123A, rated for about 1 year
• Product life: 10 years from the date of manufacture
• Wi-Fi: 2.4GHz only, not 5GHz
• Hub: not needed, and it does not work with the X-Sense SBS50 base station

Who it suits

• Nest Protect owners: anyone replacing one who still wants alerts on their phone.
• People who travel or work away: the app tells you about an alarm you cannot hear.
• Homes with a gas boiler or wood burner: one unit covers both smoke and CO.

The limits

X-Sense rates the battery at about a year, whereas its non-Wi-Fi SC07-W has a 10-year battery. The government's guidance for landlords and tenants calls sealed-for-life batteries "the better option" for battery alarms.

It only works on 2.4GHz Wi-Fi, so a 5GHz-only network will not do.

Placement also needs thought. The same guidance puts CO alarms at head height, about 1 to 3 metres from the appliance. So check the X-Sense manual before fixing a combined unit.

Where to buy it in the UK

Amazon UK had the single pack in stock at £45.99 on 5 October 2026. The full specification is on the X-Sense SC07-WX product page.

Building out a smart home? Our guide to the best smart plugs in the UK compares the plugs we tested.

X-Sense SC07-WX on Amazon UK

FAQs

How much is the X-Sense SC07-WX in the UK?

On 5 October 2026 Amazon UK had the single pack at £45.99, in stock.

Does the X-Sense SC07-WX replace the Google Nest Protect?

On this page, yes. Google announced on 28 March 2025 that it was discontinuing the Nest Protect, although existing units keep working until they expire. The 2nd gen model needs replacing 10 years after manufacture. The X-Sense does the same job: smoke and CO detection with phone alerts.

How long does the X-Sense SC07-WX battery last?

About 1 year, says X-Sense. The alarm itself lasts 10 years from manufacture.

Does the X-Sense smoke and CO alarm meet UK standards?

X-Sense lists it to EN 14604 for smoke alarms and EN 50291 for carbon monoxide alarms.

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