Different makes and models will be slower or faster to detect smoke coming through and have different alarms working at different volumes. The reason for having smoke alarms is, of course, to save the house occupants if a fire should break out. When it senses smoke, it delivers several verbal warnings before activating the 85dB alarm, giving you just enough time to deactivate the alarm through the app or by waving at the built-in motion detector before you get an earful. And, like FireAngel’s Thermoptek-powered smoke alarms, it has a hush button you can push should it go off unnecessarily, sparing you an 85dB ear bashing.

Be alerted to dangers quicker with one detector triggering all the alarms in your home: if a fire starts in your kitchen while you're in the bedroom, Fireangel interlinked smoke alarms and heat detectors will send an alert to each alarm, ensuring everyone is aware. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH). Fireangel smoke alarms have been designed, built, and been put through rugged testing by one of the leading manufacturers, so you know you can rely on them to keep your family protected should the worst happen. ST-622 smoke alarm with Thermoptek™ thermally enhanced optical sensing to provide fast reaction to both slow smouldering and fast flaming fires in a single alarm.Thermoptek combines an optical sensor with a temperature sensor, increasing the sensitivity of the optical sensor as the temperature increases.

The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. As a rule of thumb, it’s best to use optical alarms in living rooms, bedrooms or downstairs hallways where you either have a lot of upholstered furniture and soft furnishings or the alarm is likely to be set off by cooking fumes.It combines FireAngel’s Thermistek sensor with a heat disk that’s designed to reflect directional heat from a fire onto the sensor, so that you get a faster reaction to an outbreak. Either FireAngel's FA6620‑R or FA6615-R smoke alarms can replace your end of life ST-622 without requiring a new base plate or leaving unsightly holes in your ceiling. Traditional optical alarms aren't as good at detecting the black smoke from fast flaming fires but as a secondary product of a fast‑flaming fire is heat, Thermoptek Fireangel smoke alarms detect both elements for a quicker response time. All too frequently a tenant will 'borrow' the battery to please a child whose toy has rung out of power.

However, the difference isn’t huge, and they’re less likely to be triggered accidentally when cooking. The sealed-in battery lasts 10 years, while a single button tests the alarm and hushes it should it go off inadvertently. The advantage with these is that they can warn you of a fire through an alarm or alert on your smartphone, and also, with some systems, trigger smart lighting to come on. As well as allowing easy testing with a sweeping brush from the floor below, this large button also activates our Sleep Easy function which silences low battery chirps for 8 hours - giving you a peaceful night's sleep.

Good detectors, have used them for a few years now, the only Minus is don't believe the Batteries last 10 years, maybe about 5 or 6. Credit subject to status, UK residents only, Industrial Tool Supplies (London) Limited acts as a broker and offers finance from PayPal credit. Keep ionisation alarms for upstairs hallways or areas where dust or exposure to the elements (say, through an open door) might potentially set off an optical sensor. Once light hits this receptor a signal is sent to the integrated circuit causing an alarm to sound alerting occupants of the recognised fire.

The FireAngel HT630 is a good, affordable, well-regarded unit, backed by a ten-year warranty and powered by a sealed-in Lithium battery with a ten-year lifespan. Meanwhile, a system of colour-coded indicators on the central ring gives you visual alerts and updates, and even a subtle night light if you pass it in the dark. Where your alarm is installed can trigger nuisance alarms if not correctly placed, for example too close to doors or windows.However, any alarms sold in the UK have to meet BS EN 14604:2005, which specifies the requirements, tests and performance criteria for smoke alarms using optical or ionisation sensors. Using the sensing technology of choice for the UK's Fire and Rescue Service, the FireAngel ST-622 is a sealed 10 year battery powered Thermoptek smoke alarm with improved detection of slow-smouldering fires. Thermoptek technology combines the very latest in optical sensing with thermal enhancement and when compared to single sensor alarms react to fire in under half of the time - meaning you and your family have vital extra time to react.