Smoke alarms are a essential safety device in any property and their ongoing maintenance is important. Hopefully you are testing your alarm at least once a month to see if it still sounds. However were you aware that the manufacturers suggest that they should be replaced at least every 10 years to ensure you get the best protection? Over time the detector / sensor in an alarm gets dirt ingress due to insects and just household grim. So whilst the alarm may still function it is not as sensitive to detecting alarms as it should be. If your alarms are mains powered with / without a battery backup with have a simple booking service to ensure that your alarms are replaced to ensure you get the best protection