Abstract: A smoke detector that is easily attached to the limb of a Christmas tree that includes a smoke detector circuit and an audible alarm circuit for generating an audible alarm in response to detecting smoke. The smoke detector circuit is capable of detecting small amounts of smoke and triggering an alarm. An additional fire detector element is also provided in the form of an infrared detector that detects rapid changes in infrared levels and generate an activation signal for causing the speaker to generate an audible alarm. The housing of the smoke detector has a Christmas decoration theme so as to not detract from the decorations on the Christmas tree.