Abstract: A Christmas tree topper includes a housing manufactured from a predetermined material and having a predetermined size and a predetermined shape adapted for use on a Christmas tree as a Christmas tree-top ornament. The tree topper has an interior space adjacent a bottom thereof. A detector mechanism is disposed within the interior space of such housing for providing a signal upon detection of at least one of a predetermined amount of smoke and heat. An audible alarm device is operably connected to the detector and disposed within such housing for both receiving the signal provided by the detector and for emitting an audible alarm upon detection of such at least one of the predetermined amount of smoke and heat. There is a control apparatus operably connected to the detector and disposed one of within and on such housing for turning such detector on and off.