This picture is a great example of the importance of annual fire alarm testing and the cleaning of smoke detectors. This smoke detector was found in this condition during one of our annual inspections. You can visibly see in the picture how the dust has built up on it and is blocking the screen. Smoke detectors in this condition will either false alarm due to the amount of dust inside of the detector or they will not function the way they should in the event of a fire due to the blockage not allowing smoke to enter the chamber properly. These are serious issues that can be solved by simply having your fire alarm system tested and inspected each year. Please contact us with any questions.