Pros: The best smart smoke alarms will trigger quickly and will sound the alarm on your phone, as well as through the alarm itself. 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. Others will sound the alarm through the alarm unit itself, but then send texts or emails to your phone, rather than sounding an alarm on your phone.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.Some smart smoke alarms are much better than others at letting you know when there’s smoke around, both in terms of how quickly they detect smoke and the methods they use to let you know. All of the smart smoke alarms we've tested are optical models. This could be critical if you’re out when there’s a fire. But the unique selling point of a smart smoke alarm is the ability to send alerts to your phone when there’s a fire. Smart smoke alarms are designed to sound the alarm when they detect smoke, as a conventional smoke alarm would. Pros: Every linked alarm sounding when smoke or rapid rises in heat are detected.Ĭons: They tend to cost more than standalone alarms, so look for deals when you buy.
In Scotland, from February 2022, interlinked smoke and heat alarms need to be fitted in all homes. 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. 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. Pros: Good for bedrooms, landings and hallways, and near to kitchens as they aren’t as prone to false alarms from cooking.Ĭons: Not so good for dusty areas, such as lofts, or steamy areas such as bathroom landings. They detect the larger smoke particles from slower smouldering fires. They contain an infra-red LED which, every few seconds, pulses a beam of light into the sensor chamber to check for smoke particles.Īs smoke enters, the infrared light is scattered onto the photodiode light receptor, triggering an alarm. Optical (or photoelectric) alarms are light sensors. Pros: Can suit dustier areas, such as lofts, the area near your bathroom or rooms where people smoke.Ĭons: They shouldn’t be placed too near to kitchens because of false alarms. These alarms are more sensitive to smaller particles of smoke produced by the flaming stage of fires than optical alarms, and more easily triggered by cooking – causing false alarms. When this happens a signal is sent to the integrated circuit and the alarm sounds. Smoke particles change the balance of the current. These are positively and negatively charged, creating a small current inside the chamber. Ionisation alarms ionise the air between two electrodes. What's the best type of smoke alarm for my home? Ionisation smoke alarms
In our reviews of interlinked alarms, we note which smoke alarms will work with which heat alarms. When buying interlinked smoke and heat alarms, look for deals on packs of alarms, including two or three smoke alarms and a heat alarm as this will help to keep costs down when upgrading the alarms in your home.
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Now that the alarms law has changed in Scotland, you'll need to install interlinked heat and smoke alarms in your home.Īll 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. What kind of smoke alarms and heat alarms will I need in Scotland now that the law has changed?
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