Mini Smoke Alarm Detector,10-Year Battery Mini Fire Alarm, Standalone Photoelectric Fire Detector, CE Certified Smoke Detector with 3M Adhesive Tape, SP-ZR170S, 3-Pack…

Love this , very good quality and size was perfit

Although a lot smaller than I imagined they make a considerable amount of noise. I fitted mine using magnetic plates and they looked fine which was very easy to do. I am pleased with my purchase and feel safer now. I just hope the battery life lasts as long as it is supposed to

Coming from a background in health and safety auditing, particularly with reference to ISO 45001 standards, I approach home safety products with a critical eye. It’s not just about ticking boxes or meeting minimal legal compliance; it’s about making practical, effective decisions that reduce real-world risk. So when I decided to add the SPREADTRON Mini Smoke Alarm Detectors to my home setup, I was doing more than simply buying a product — I was selecting a safety solution I could endorse from both a personal and professional standpoint. The SPREADTRON mini smoke alarms immediately appealed to me due to their standout specifications: a compact, minimalist design measuring just 52mm in diameter; a ten-year sealed lithium battery; a photoelectric sensor for responsive smoke detection; and compliance with EN14604:2005+AC:2008 standards. I bought a pack of three with the intent to install one in each bedroom, keeping the home covered without resorting to large, unsightly devices. What struck me first was the design. Aesthetically, these smoke detectors are subtle and modern — no more than a white disc that blends cleanly into white ceilings or walls. They are constructed from fire-retardant ABS material, which gives both the body and mounting base a sense of light durability. This is a welcome departure from the clunky traditional units that look dated and industrial in residential settings. The finish is matte, reducing reflections and keeping it low-profile. There are no visible flashing LEDs or protruding test buttons — everything is integrated thoughtfully. Installation was refreshingly simple. Each unit comes with a 3M adhesive pad pre-attached, which meant no tools or drilling were required. For anyone with mobility concerns or in rented housing where permanent fixtures aren't ideal, this alone makes it an excellent option. Despite my initial scepticism about the adhesive holding over time, it has proved secure across textured paint and even a slightly uneven surface in one of the rooms. The total installation time per unit was under a minute. Now on to functionality. The SPREADTRON smoke detector uses a photoelectric sensor — which, in real-world terms, means it’s better at detecting slow-smouldering fires (like electrical faults or mattress fires) than ionisation alarms, which often react faster to fast-flaming events. In most domestic settings, especially bedrooms, this kind of detection is ideal. It's quiet most of the time, but highly sensitive when it needs to be. I tested each unit with controlled smoke using an incense stick, and they all triggered within approximately 10–15 seconds, emitting a strong 85dB alarm. The alarm volume deserves a separate mention. At 85dB measured at three metres, it's loud enough to wake a deep sleeper but not so piercing as to induce panic. This is a fine balance to achieve, and it has clearly been engineered with careful attention to acoustics. Additionally, the presence of a silence button means you can mute the device quickly in the event of a false trigger, which is especially valuable in small homes or flats where kitchens and sleeping areas might be close together. One of the more technical aspects I appreciate is the self-test and low battery functionality. Each detector performs regular internal checks, and a red LED flashes alongside a tone if an issue is detected. There’s also a low battery warning, which is critical in any system expected to run autonomously for a decade. It ensures that should anything compromise the unit — manufacturing fault, power degradation, or age — the user is notified with enough lead time to act responsibly. The battery itself is a 3V 1400mAh lithium cell, sealed into the unit for the full ten-year lifespan. This non-replaceable approach aligns with current best practices in long-life smoke alarms, where user error (like not replacing a battery) is effectively eliminated. From a maintenance perspective, this design means zero upkeep: no need to remember to test batteries, and no anxiety about whether a flat battery is quietly compromising your safety. Placement versatility is another major plus. Because these units are so compact and light, they can be placed not only in traditional locations like bedroom ceilings, but also in tighter or more aesthetically sensitive spaces such as hallways, stairwells, small studios, or even inside closets housing electrical panels. I personally installed one above the bedroom doorframe, which offers central coverage without disrupting the clean ceiling lines. From a safety culture point of view, devices like the SPREADTRON mini alarm empower homeowners and tenants alike to take simple steps toward a safer home. It’s not just about meeting insurance policy minimums; it’s about building everyday awareness and control over our living environments. These small devices — through thoughtful design and reliable engineering — support that mindset. In terms of performance over time, I’ll be closely observing longevity. The 10-year battery claim is standard across premium alarms, but not all actually deliver. However, based on materials, build quality, and the manufacturer’s documented certification, I am confident these detectors are built to endure. The operating temperature range of -10°C to 55°C also gives peace of mind for unheated rooms or lofts. For professionals in safety, this kind of device aligns well with principles of hazard prevention, user-centred design, and ease of deployment. For families, it provides fast, quiet peace of mind. For minimalists or design-conscious homeowners, it finally removes the aesthetic obstacle that traditional smoke detectors posed. Ultimately, SPREADTRON’s mini smoke alarms strike a balance between reliability, discretion, and modern usability. They are a smart, health-and-safety-conscious investment — especially for multi-room coverage where a full system installation may be excessive or invasive. This is a product I’d confidently recommend in both a professional audit context and in casual conversation. It delivers on its promises and enables better personal protection with minimal friction, which is what great safety equipment should always do.

Great size and easy to fit. We close down and live elsewhere each summer and we just take them off their mounts to disable them while we're away.

Oh my god I bought this a few years back, they're already dead.... and look the price has more than DOUBLED?!?!?!? I bought this for £42 3 years ago.

Perfect little alarm that looks nice too!

Bought the product in May 2023. Came home today 03/09/2023 and it’s making the chirping sound that means battery is low. Edit 19/09/2023 The seller has been very gracious and offered a refund without me having to chase them for it. They clearly have confidence in their product.

Small, loud and neat. Hopefully I won't need to edit this due to battery life. Fingers crossed.

Easy mount double tape.

Compré para toda la familia y de momento todo bien, se pega muy bien al techo

Ne ho comprati di varie tipologie e marche ma questo è il più sensibile e affidabile, tutti dovrebbero comprarlo per dormire sonni più tranquilli , qualità top

Très bon détecteur et discret.

Suena muy bien fuerte