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Wireless Interlinked Smoke and Heat Alarm Scotland Bundle with 10 Year Battery Life, EN14604, CE Certified, Fire Alarms Scotland Interlinked, Low-Battery Alert, Pre Linked. 3 Pack

£54.995£109.99Clearance
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About this deal

Batteries used to be the weakness of most household smoke alarms, requiring replacement every year or so and usually running out of charge, causing the low battery alarm to ring, in the middle of the night. As with carbon monoxide alarms, the trend is now towards alarms with a built-in, 10-year lithium battery, designed to work for the alarm’s effective lifespan. In Scotland, these are now a legal requirement. In England and Wales, however, you can still buy and use alarms with a replaceable 9V battery, and these often work out cheaper. We’d recommend paying extra for the convenience and peace of mind, but the choice is yours. Is there anything else worth looking out for? 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. Smoke detectors are simple devices by design, but are available with features to integrate into your smart home or improve the functionality of the device. One of the most common features you’ll find is interconnectivity. According to Rodriguez-Zaba, “Interconnectivity is a really important safety feature that allows the detectors to be connected to each other and sound an alarm simultaneously in the event of a fire.” This means that even if smoke is detected in one area of your home, an alarm will sound on every detector installed in the house—helping to ensure that everyone in the home hears the alarm. Some smart models sound an alarm on your smartphone and through the alarm itself when triggered – this is the most helpful kind of smart alarm. So if you’re out of your home and not near your phone when the messages come through, you’ll have no way of knowing the alarm was sounding.

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. A smoke and heat combination detector is called a smoke and heat detector. These sensors combine the functionality of a smoke detector and a heat detector. A combination smoke and heat detector will activate and trigger an alarm upon sensing either smoke or an unusually high temperature. 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. Ionisation alarms ionise the air between two electrodes. These are positively and negatively charged, creating a small current inside the chamber.Of the many features that distinguish the Google Nest Protect, the ability to receive alerts and silence the alarm in the Nest app is a real game-changer. If you’ve ever frantically opened windows and fanned a smoke detector with a towel in an effort to silence a false alarm, you’ll agree that pushing a button in the app to silence the alarm is faster, simpler, and less unnerving. Nest even delivers a ‘heads-up’ alarm that delivers a push notification to the app and causes the smoke detector to glow yellow, giving you a chance to dismiss a false alarm before the unit enters full-fledged alarm mode. Pros: Can suit dustier areas, such as lofts, the area near your bathroom or rooms where people smoke. 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. Related to interconnectivity is the wireless feature found on many smoke detectors. A wireless interconnected smoke detector will form a mesh network with other compatible wireless interconnected devices. You’ll need to follow the pairing instructions for the device, but the process is usually fairly simple and you can often connect up to 18 devices together. All of the major manufacturers (Aico, FireAngel and Kidde) make smoke and heat alarms that will work in combination with one another and we have tested pairs of smoke and heat alarms from each of them.

Keep in mind that while this model is a top-notch smoke detector, it’s not a combination unit that can also detect elevated carbon monoxide levels. It also doesn’t include advanced features like a voice alarm or smart functions. Aside from fire danger, gas cooking stoves can be a source of carbon monoxide poisoning in the home. The First Alert Smoke and Carbon Monoxide Detector is vigilant about both hazards and uses a voice alarm to clearly specify the danger detected, along with the location. The unit also emits a loud beep and flashes an LED light as additional warning signals. Combination smoke and heat detectors are enrolled as 24-hour zones. This means that they can cause a fire alarm upon activating, regardless of whether the system is in an armed or disarmed state. This is important, as you will want to receive emergency help for a fire regardless of the current arming state. If you are at home sleeping with your system disarmed, a fire alarm can occur. A fire alarm can also occur if you are away from home with the system armed. Either way, your system will take appropriate action. Battery-operated smoke detectors have a compartment for a battery that serves as the power source for the device. Battery type and quantity vary by device, but two AA batteries or one 9V battery are the most common options. However, some devices require even more batteries, like the popular Google Nest Protect. It needs six AA batteries to perform its long list of features. Plan to change the batteries in your smoke detector every six months unless the unit has a long-lasting lithium-ion battery. These battery-operated smoke detectors may not need a battery swap for the entire 10-year life of the unit. 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.

The best smoke alarms you can buy in 2023

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. Interlinking when one alarm goes off, all the connected detectors are activated. This can be particularly useful in a larger house. Erica Puisisis a product researcher and writer with years of experience testing and writing about home products and appliances. When researching the best smoke detectors, she compared models based on power source, sensor type, installation, and other features that make the smoke detector more user-friendly. All options on this list are UL-certified and have a 10-year lifespan.

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