Mounting on a wall
1. Using a screwdriver or similar tool, break the six knockouts in the back-box. The knockout positions are
marked WALL.
2. Mount the back-box to the wall with the 4x20 screws. If two detectors are installed, the distance between the
upper and lower detector should be at least 20 mm (0.78 in). If mounting in a corner location, ensure the
distance from the side wall is at least 1 m (3.2 ft). Use a pitch of 83.5 mm (3.3 in) when connecting to a gang
electric box.