One of the detectors doesn’t work

Return them. Contact Amazon https://www.amazon.co.uk/gp/orc/returns/homepage.html/ref=orc_surl_ret_hp?ref_=orc_spr_home_page_rdr&fg=1

Can you use with 3m magnetic plates

Yes. Works really well with them.

What does the diameter of the baseplate measure please?

Alarm is 130mm across, the baseplate or fixing plate is 120mm

how loud is it ie how many decibels many thanks

Thank you for your enquiry. The answer to your question is 85dB(A) at 3m (minimum). If you require any further information please do not hesitate to contact us directly.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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FireAngel ST-622T Smoke Alarm, 2 Pack

Product ID: 86160751

Details

Alarm
Audible
Brand
FireAngel
Colour
White
Item weight
310 Grams
Operating humidity
Up to 90% RH
Power source
Battery

⏳10-year product lifespan

🔋10-year sealed lithium battery

🔥Thermoptek multi-sensor tech

36529 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Stay safe, stay smart — fire protection that works as hard as you do!

TOAST PROOF DESIGN - Minimizes false alarms from everyday cooking fumes, so your peace of mind stays uninterrupted.
SMART SILENCE FUNCTION - Temporarily mute nuisance alarms with a simple press, perfect for cooking or brief false alerts.
HASSLE FREE 10 YEAR BATTERY - Sealed lithium battery powers your safety for a decade—no replacements, no interruptions.
TRUSTED BY UK FIRE SERVICES - Used by 90%+ of UK Fire & Rescue, this alarm is the gold standard in home fire safety.
ADVANCED THERMOPTEK DETECTION - Combines optical & thermal sensors for lightning-fast fire alerts, catching both flaming & smouldering fires.

The FireAngel ST-622T Smoke Alarm 2 Pack features cutting-edge Thermoptek multi-sensor technology that rapidly detects both fast flaming and slow smouldering fires. With a sealed 10-year lithium battery and a full product lifespan of 10 years, it offers maintenance-free, reliable protection. Its smart silence and toast-proof functions reduce nuisance alarms, making it ideal for modern homes. Trusted by over 90% of UK Fire & Rescue Services, this alarm combines professional-grade safety with user-friendly design.

Specifications

ASIN	B00OTN2P3O
Alarm	Audible
Battery Average Life	10 years
Battery Type	Sealed Lithium Battery
Best Sellers Rank	14,479 in DIY & Tools ( See Top 100 in DIY & Tools ) 65 in Smoke Alarms
Brand	FireAngel
Colour	White
Customer Reviews	4.6 4.6 out of 5 stars (9,006)
Global Trade Identification Number	00816317001698, 00816317002961
Included Components	2x Smoke Alarms + Base Plates, 4x Screws, 4x Rawl Plugs, 1x Instruction Manual
Item Dimensions D x W x H	3.4D x 13W x 13H centimetres
Item Type Name	Smoke Alarm
Item Weight	310 Grams
Manufacturer	FireAngel Safety Technology Ltd
Manufacturer Warranty Description	5 years.
Material	ABS
Model Number	TST-620Q
Number of Items	2
Operating Humidity	Up to 90% RH non-condensing
Part Number	TST-622Q
Power source	Battery Powered
Product Style	TST-622
Sensor Type	Photoelectric
UPC	880208490465 816317001698 816317002961
Unit Count	2.0 count
Upper Temperature Rating	38 Degrees Celsius

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