If the alarm senses products of combustion. If this doesn’t stop the alarm from sounding, you should contact OneCALL on 0345 8 507 507. will blink every 30-40 seconds to indicate the sensor is operating correctly. The film below shows you how to stop your smoke alarm making unwanted noise. The cover unit should then be cleaned by running a narrow nozzle attachment of a vacuum around the smoke entry slots, which should remove any dust, fibres or insects that may be within the sensor chamber of the alarm. Find Fire alarm red light stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Some smoke alarms have a flashing red light that flashes when there is material in the sensor that needs cleaning out. The alarm can be silenced by pressing and releasing the test / hush button on the cover of the triggered alarm - pressing and releasing the test/hush button on different alarm cover unit won’t silence it.Īfter the test/hush button has been pressed there will be a 10 minute period of reduced sensitivity, indicated by the red light flashing once every ten seconds. This means testing can be performed at any time, without disrupting building occupants and operations - it can even be scheduled to take place automatically. If every alarm on the system is sounding, a rapidly flashing red light on the cover of one of the units will show where the alarm was triggered. Built-in light and sound sensors allow the fire alarm control panel to detect the operation of the strobe and sounder and confirm whether the device tested properly. This indicates that the alarm is in a temporarily desensitized condition. The most likely reason for an alarm sounding - without the presence of smoke or a fire - is dust inside the cover unit. The red LED will illuminate for 1.5 seconds every 8 seconds while in hush.
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