FireAngel FA3820 Portable Carbon Monoxide Detector/Alarm, 10 Year Battery

Good simple CO monitor that is reliable and last several years. This is the second one we have had.

I fitted the FireAngel FA3820 carbon‑monoxide alarm the same afternoon it arrived—two screws into a joist above the wood‑burning stove and that was it. The sealed 10‑year battery means I’ll be stacking winters’ worth of logs before I even need to think about power, and the slim case feels sturdy enough to survive the odd knock when I heft kindling indoors. The first burn test was reassuringly loud: one press of the front button, three sharp beeps, and a bright red LED—exactly the jolt you want if the flue ever misbehaves. A long‑press triggers a full self‑check, so I can run it every month without climbing up to the attic detector like I used to. What I love most is its portability. I slip it into the glove box whenever we head to a holiday cottage with an open fire; takes thirty seconds to stick on the mantle with the spare adhesive pad and I can actually sleep instead of worrying about hidden vents. Bottom line: simple install, no‑maintenance battery, ear‑splitting alarm, and the freedom to take it on wood‑fired getaways. It’s a tiny investment for ten years of breathing easy.

Pleased with item is as described.

Like the 10 year life but not had it 10 years yet and it has never gone off. Guess its a matter of trust!

After nearly forgetting a portable CO detector on a cabin trip, I installed this FireAngel FA3820 unit in my bedroom and now travel with it. Setup took seconds: placed it upright on a shelf (free-standing) and later wall-mounted using the included bracket. The 10-year sealed battery was the key selling point – no battery anxiety. The Positives: The electrochemical sensor provides critical accuracy – it triggered a "ventilate" pre-alarm during a malfunctioning heater test (before dangerous levels accumulated). The 85dB alarm is piercingly loud (audible through closed doors) with a blinking red "CO" light for visual alerts. Alarm memory proved invaluable after a brief CO incident while I was out – the flashing light alerted me immediately upon returning home. The compact, lightweight design (95g) slips into luggage effortlessly – I’ve used it in Airbnbs, tents, and ferries. Third-party certifications (Kitemark/BSI) and CE/UKCA marks validate its reliability – non-negotiable for life-saving gear. Minor Considerations: - Wall-mounting requires precise placement (per manual) to avoid false alarms from dust/steam – my first attempt near a bathroom triggered unnecessary alerts. - No smart features like app alerts (expected at this price, but the core function is flawless). - "End-of-life" beeps are identical to low-battery chirps on other devices – could cause momentary confusion. Overall Experience: This detector inspires total confidence. The 10-year battery eliminates maintenance hassles, while the travel-friendly size ensures I never leave protection behind. It balances critical sensitivity with false-alarm prevention when positioned correctly. For homes and travel – especially with gas appliances or attached garages – it’s indispensable. Recommendation? An emphatic yes. Every household and traveler should own one. Final Thought: Uncompromising safety tech that’s earned permanent spots in my home and go-bag.

Very smart little unit with a great recommended brand name, it's just another " peace of mind " bit of equipment that you hope is never activated. the test button is easy to use and lets off a sharp loud noise that is different from the smoke alarm mounted near it. A 10 year battery life is excellent for the continued protection that this detector gives, to pass the BSS on boats its the law to have one fitted, should be the same for homes. IT WILL SAVE YOUR LIFE AND LOVED ONES should any carbon monoxide be detected.

Good quality

What can I say, it works as far as I can tell. Only time and bad luck will tell the whole story.

The fixing screw holes are very small, the previous models had proper size, also the volume is not too loud ( hopefully just the test is this quiet)

Good neat product.

Hopelijk nooit nodig te hebben maar apparaat voelt prima aan en makkelijk in gebruik. Je kan hem ophangen of neerzetten.

Excellent item and strongly recommended.

Wygląda nowocześnie i jest bardzo prosty w obsłudze. Plus za to że dźwięk Testu jest cichszy od samego alarmu czyli nie piszczy w uszach po tym jak się go sprawdza raz w miesiącu