INSTALLATION GUIDE
Room Controller 4 (NIRC4-xMN) Mounting
4.2 Mount the Base without a Backbox
When mounting the NIRC4-xMN on a drywall without a backbox, mount the base of the NIRC4-xMN directly
to a flat wall surface using four screws suitable for the wall type.
Cable wires should enter and leave the device’s housing through the hole in the center of the base, or
through the knockouts at the bottom or right side of the base. Depending on the number of wires entering
the base, you may need to remove a portion of the cable’s jacket to ensure it will fit through the knockout.
When choosing a wall location for an NIRC4-xMN, consider where the connecting cables are located. If the
connecting cables run inside the wall, locate the base of the NIRC4-xMN over the hole where the cables
exit from the wall. If the connecting cables are run in a channel outside the wall, locate the base above or to
the left of the channel, where the cables exit the channel. The cables should enter through the knockout
holes in the base of the NIRC4-xMN.
Do not distort or twist the base when mounting it to a wall. If the base is distorted, the NIRC4-xMN
dome cover will not fit properly and may fall off.
Figure 1. NIRC4-xMN base orientation and cutouts
Legend
1. Arrow indicator
2. Circuit board spring type holding clip
3. Cutouts
To remove the knockouts
1. Locate the knockouts to be removed from the bottom or right side of the base. See Figure 1. NIRC4-
xMN base orientation and cutouts, page 5, items 3.
2. Using a cutter or pliers, carefully remove the excess plastic from the knockouts.
TD 93351EN / 21 March 2022 / Ver. B 5
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