CPC G08B 17/107 (2013.01) [G08B 17/117 (2013.01); G08B 29/145 (2013.01)] | 19 Claims |
1. A self-testing hazard sensing device, comprising:
a heating element having a material applied thereto for generating aerosol and/or carbon monoxide; and a controller configured to determine whether the self-testing hazard sensing device is functioning properly based on a rate at which a density level of the generated aerosol and/or carbon monoxide decreases.
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