Thread: smoke alarms
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Old May 8th, 2008, 06:58 AM
Mortis13's Avatar
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Join Date: Apr 2008
Location: Johannesburg, South Africa
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Default Re: smoke alarms

There are smoke detectors that have dedicated CO2 detectors built in, since most smoke detectors can't detect changes in CO2.

Detectors usually require visible smoke particles to be set off, since they use a beam of light with a sensor, and when smoke enters it scatters the beam, and the sensor detects the change in the amount of light. That's why they require an additional CO2 detector, since CO2 isn't visible, and wont scatter the beam.

Well, that is what I've been told.

Last edited by Mortis13; May 8th, 2008 at 07:02 AM.
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