Archive for January 21st, 2010

Question: Why does the alarm go off during cold weather?

Thursday, January 21st, 2010

Answer: The unit may go into alarm only when it is very cold out or if a door adjacent to a heated area is opened, such as in an entry way. This is due to condensation (water vapor) in the detection chamber. The sensor is a particle-sensing device and when water condenses in the sensor, the unit will go into alarm. The operating temperature on FireX smoke alarms is between 40 and 100 degrees Fahrenheit (4 – 38 degrees Celsius). If the unit is in a garage or attic, you may consider replacing it with a heat alarm which is not effected by condensation.

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