Abstract: A door system includes a door jamb, a door panel, a window disposed in the door panel, a plurality of electronic components, a hinge pivotally coupling an edge of the door panel to the door jamb, and a control system disposed within the door panel. The plurality of electronic components include an electronic locking mechanism coupled to the door panel, a camera coupled to the door panel, a sensor configured to facilitate detecting at least one of sound or activity proximate the door panel, and a backup battery disposed in at least one of the door jamb or the door panel. The edge of the door panel is configured to receive power from an external power source to power the plurality of electronic components. The backup battery is configured to power at least one of the plurality of electronic components in an event of power loss from the external power source.

Abstract: A smoke detector adapted for installation within a bracket of a ceiling downlight; the smoke detector comprising a lower body portion adapted for engagement with said bracket, and an upper body portion extending upwardly from said lower portion.

Abstract: A smoke detector adapted for installation within a bracket of a ceiling downlight; said smoke detector comprising a lower body portion adapted for engagement with said bracket, and an upper body portion extending upwardly from said lower portion.