SKU: 21400347734

FireAngel HM-SN-1 Mains Powered Enhanced Heat Alarm with 10 Year Lithium Battery Back-up

$40.63 $45.14
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

FireAngel HM-SN-1 Mains Powered Enhanced Heat Alarm with 10 Year Lithium Battery Back-upFireAngel HM SN 1 Mains Powered Enhanced Heat Alarm with 10 Year Lithium Battery Back Up The FireAngel HM SN 1 Enhanced Heat Alarm is a professional grade, mains powered heat detector with a sealed 10 year lithium battery back up, designed to provide dependable fire detection in high risk areas. Engineered with installers in mind, it offers fast response, long service life, and optional wireless interlinking. Part of the FireAngel Specification range,

FireAngel HM-SN-1 Mains Powered Enhanced Heat Alarm with 10 Year Lithium Battery Back-Up

The FireAngel HM-SN-1 Enhanced Heat Alarm is a professional-grade, mains powered heat detector with a sealed 10 year lithium battery back-up, designed to provide dependable fire detection in high-risk areas. Engineered with installers in mind, it offers fast response, long service life, and optional wireless interlinking.

Part of the FireAngel Specification range, this heat alarm meets current UK legislation and is ideal for domestic and social housing installations where reliable, nuisance-free heat detection is required.

Advanced Thermistek™ Heat Sensing Technology

The HM-SN-1 provides Class A1 heat detection (54°C–65°C) and features FireAngel’s innovative Thermistek™ technology. This combines a patented radiant heat dish, high-performance thermistor, and predictive monitoring to deliver a faster response to rapidly developing fires, particularly in kitchens.

Smart RF Ready for Wireless Interlinking

This alarm is Smart RF ready, allowing wireless interconnection when a compatible Smart RF module is fitted. Multiple alarms can be linked together to form a comprehensive fire safety network across the property. It is also compatible with the FireAngel Connected Home Solution when used with a gateway.

Key Features & Benefits

  • Mains powered with sealed 10 year lithium battery back-up
  • Class A1 heat detection (54°C–65°C)
  • Advanced Thermistek™ heat sensing technology
  • Faster response to kitchen and high-risk fires
  • Smart RF ready for optional wireless interlinking
  • Compliant with BS 5446-2:2003
  • Compatible with FireAngel Connected Home systems
  • Supplied with dust cap to protect during installation or decoration
  • Ideal for domestic and social housing projects

Recommended Installation Areas

  • Kitchens
  • Garages
  • Lofts

Data Sheet:

View the FireAngel HM-SN-1 Data Sheet

Instruction Manual:

View the FireAngel Instruction Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21400347734

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4.9 ★★★★★
Based on 19 reviews
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Product Reviews
M
Verified Purchase
Mrs Collins (& occasionally Hubs)
Carnegie, US
★★★★★ 3
Misleading: Pillow Itself Has Only TWO Configurations!! >:(
Color: Black, Size: Adjustable 9&12 Inch + 1 Head Pillow
I was sold on the 10-Option bit until I realized there are only 2 choices as far as flooping and flopping the pillow itself. It is 2 triangles, a large one and a small one. The large triangle IS THE SAME ANGLE ON EACH END. The small triangle IS ATTACHED TO THE CENTER OF THE LARGE TRIANGLE. That means no matter how you move the pillow itself, you're getting the EXACT SAME THING. Where YOU come in is where all these infinity "versatility" options are - whether you put it upright or whether you put it flat. That's it. All this I can read in bed! I can play on my laptop! I can watch TV! Yeah that's upright. Option 1. And all this I can put it under my legs! I can use it as a normal pillow as well! That's flat. Option 2. There is absolutely nothing special or different about this thing except the stupid pocket. Had they not made the triangle the same angles on the end, had they made a steep angle and a low angle and that center pillow detachable but still velcro - THEN there would have been more elevation options. But this, I was highly disappointed. It's like saying, My bed has 360 options! (because I can lay 360 different degrees around the bed) AND 360 MORE BECAUSE GUESS WHAT! I CAN LAY ON MY STOMACH 360 DIFFERENT DEGREES around the bed! Oh! And on my side 360 degree different ways! Wait I have a left and a right side - the OTHER side I can lay on it around the bed 360 different degrees as well! And sitting cross-legged on the bed 360 different degree directions as well! So. No. It's a firm memory foam pillow. You lay upright or lay down or you put it under your legs or on your lap. It changes 2 ways and you make it work 4 ways. That's it. Yes it smells but not too bad, not foul, just persistently. Like a light chemical smell but it didn't aggravate me (I get scent, etc. migraines). It self-inflated pretty fast. But as you can tell, I was not impressed with it in reality. :(
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
T
Verified Purchase
TM Conway
Massapequa, US
★★★★★ 5
Helps my coughing
4.8 stars. This helps keep me sleeping at a good angle to prevent night coughing. Also, it's great for relaxing and watching tv in bed. I find that it is Goldilocks level firm - just enough to be supportive but soft enough for comfort. I wish I'd gotten the roll pillow now :-( It's hard to make my bed look "made" with this on it - no matter what color I get. I keep it on the side & out if sight til I need it. I do like the material & thankfully it's removable for cleaning, but I can tell it's going to wear with a lot, so I do wish it were easier to find more covers for it so I could have one on while washing one. Overall, I like this a lot. The only thing negative is that I can see that it will "pill" & fuzz up in places with more use. I do use this every night. One warning: As with any products like this that are suctioned close for packaging - be VERY careful. I always hold one corner of the plastic to open a little vent before I cut more to remove the pillow and let it "fluff". It would be easy to snip some of the fabric...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2025
M
Verified Purchase
MS in AZ
Carnegie, US
★★★★★ 5
Helped my husband get a good night's rest after surgery.
Color: Dark Grey & White, Size: Adjustable 9&12 Inch + 1 Head Pillow
We bought this after my husband's heart surgery, and the doctors wanted him to sleep in an elevated position for a few weeks. Before this, he was just stacking some pillows behind his neck, which did not get him a comfortable night's rest. His first night using this was a game changer for him. It was the first time he was able to sleep through the night. It was just the right height, and just the right level of soft/firm. Once he's done with it, I think I'll steal it from him and use it for reading in bed. The little neck rest was super helpful too. Thanks to whoever invented this, and sells it at such a reasonable price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
C
Verified Purchase
Clash E
Natrona Heights, US
★★★★★ 5
Improved Sleep
Color: Dark Grey & White, Size: Adjustable 9&12 Inch + 1 Head Pillow
I got this to help with my sleep since I can't lay flat. It works great. My back started hurting because of the angle but that's because I can't sleep on my back and slide down on my side. It's very comfy and works well for what I need it to do.
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Reviewed in the United States on May 20, 2026
K
Verified Purchase
KRN
Natrona Heights, US
★★★★★ 5
Very Comfortable
Great! I was a little concerned when it came so tightly shrink wrapped, but a day or two later and it’s in great shape. It’s actually pretty comfortable, good angle. It’s a good width and pretty long to accommodate all body types. I like it can be two heights. My adult kids said it felt like memory foam. I can add my own pillow too to further adjust to my liking. I occasionally get bad heartburn or sick where I need to sleep sitting up. This helps me do that in bed. I tried using it every night at first because I usually sleep with two large stacked pillows, but I’m a side sleeper and it eventually hurt my neck. So, not great if you sleep on your side. I also just lay a pillow case across it to keep clean. You can unzip and take off the cover for cleaning, but I almost never get stuff like that back on right. I got the dark gray cover and I like the soft feel. I’m glad I got it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026

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