Pyrexx PX-1 Smoke Alarm Black

Product Information

If you own a Nest smoke and CO alarm, you will be able to continue to use it but it will need to be in addition to interlinked smoke and heat alarms. Their distinguishing feature is the fact that they can be linked to other alarms, both heat and smoke alarms, so that when one senses danger they all sound. The best smoke alarms you can buy in 2023 1. Google Nest Protect: Best smart smoke and carbon monoxide alarm

Now that the alarms law has changed in Scotland, you'll need to install interlinked heat and smoke alarms in your home. We test smoke alarms using an aerosol tester, sprayed in the direction of the alarm for up to five seconds from a distance of 30cm. If the alarm doesn’t respond within four seconds, we don’t recommend it. Having completed this functional test, we take a careful look at any controls, screens, or indicators to see how clear and effective these are.Smart smoke alarms are designed to sound the alarm when they detect smoke, as a conventional smoke alarm would. But the unique selling point of a smart smoke alarm is the ability to send alerts to your phone when there’s a fire. Heat (thermal) alarms detect heat (hot air) instead of smoke. The alarm is triggered when the temperature within the sensor chamber reaches over 58 degrees Celsius – generally when a fire is well established. For kitchen, garage or workshop use, fire services also recommend fitting a heat alarm. These sense hot air rather than smoke, and trigger when the air in the sensor chamber reaches a specific temperature, which is usually 58°C. Heat alarms are slower to respond than actual smoke alarms, but they’re also not as prone to false alarms. They won’t go off when you’re grilling sausages or burning toast, but they still provide ample warning if something catches fire in your kitchen. Interlinked smoke alarms will use the same optical or ionisation technology mentioned above, so, they're not a type of alarm in their own right. On a lighter note, Google’s data also revealed that the day when smoke alarms are most likely to sound in the UK is pancake day. Is the Nest Protect smoke and CO alarm suitable for homes in Scotland now that the law has changed?

As of February 2022, the Nest protect smoke and CO alarm no longer meet the requirements of the new Scottish alarm laws. This is because, while it can be linked to other Nest alarms, it has no way of detecting heat rises or of being linked to another heat alarm. This also allows the sensor threshold level to be increased, thereby improving the signal to noise ratio and reducing susceptibility to false alarms. The ALN-EN(BLK) smoke chamber is easily removed or replaced for cleaning and utilises a unique improved baffle design which allows smoke to enter the chamber whilst keeping out ambient light. You can put them in kitchens and garages because they’re not prone to false alarms from cooking or exhaust fumes. But they are slower to respond than smoke alarms.Wireless devices communicate with each other and other devices without the use of connecting wires. This can be through interlinking by radio or through wi-fi. Horizontal optical bench housing infra-red emitter and sensor, arranged radially to detect forward scattered light. Weight Interlinking when one alarm goes off, all the connected detectors are activated. This can be particularly useful in a larger house. If it does go off inadvertently, the large, central test/mute button makes it easy to silence, saving your ears from a thrashing. As with the Pro Connected, it buys you ten minutes to clear the air, while a “sleep easy” function gets you eight hours of quiet if you press the button once the low battery warning starts. Little touches such as this elevate the ST-622Q above your run-of-the-mill smoke alarms, making it one of the best options for most households.

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. 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. If in doubt, go optical or use a multi-sensor alarm. Use of ionisation alarms is generally being discouraged by many fire services, and some manufacturers have now discontinued their ionisation products.This could be critical if you’re out when there’s a fire. All of the smart smoke alarms we've tested are optical models.