- First the main sensor must be mounted to the ceiling. To do so, turn the front plastic enclosure/lens counter clockwise to remove it from the main PCB and back plate.
- The PCB and back plate must be installed to the ceiling. Depending upon the ceiling surface, it may be recommended to use the provided anchors.
- Ensure the CR-123 battery is installed.
- Gently line up the front enclosure with the PCB and back plate, and turn the front enclosure/lens clockwise for final assembly.
Note that the LED will flash for approximately 2 minutes upon removal or addition of the front enclosure/lens.