ABB M2231 SERIES, User Manual

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2. Latch the upper part of the device onto the bottom part. Place the upper side of the
device on the lock-in lugs and then press the bottom side onto the bottom part of
the device until it is caught by the clamp.
2) Mounted with metal flush-mounted box
1. Affix the metal flush-mounted box inside the wall.
2. Affix the back cover to the metal flush-mounted box.
3. Latch the upper part of the device onto the bottom part. Place the upper side of the
device on the lock-in lugs and then press the bottom side onto the bottom part of
the device until it is caught by the clamp.
3) Mounted with cavity wall