Christmas tree mounted smoke detector

Abstract

A smoke alarm mounted atop a Christmas tree, where an early indication of an impending fire may be generated. The alarm has built-in ionization chamber for smoke detection, control circuits for operating the ionization chamber and circuitry for processing and interpreting the output signals from the ionization chamber. In case of smoke detection, the control circuit operates a loudspeaker to generate a loud audible signal. The smoke alarm also has provisions for mounting atop a door. In an expanded version, the smoke alarm incorporates an intrusion alarm that is connected with a vibration detector with control circuits that operates the loudspeaker to produce a loud audible signal in case of tampering with the door. The alarm has provisions for self-checking the status of the built-in batteries and a light indicator shows if the batteries need replacement. A manual push button provides means for testing the smoke.

Dependencies are inferred from the claim text.