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Chamberlain merlin MT23O Installation And Operating Instructions Manual page 15

Sectional and tilt garage door opener

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@lwsrntunc
youR cM12B wtRELEss wALL BUTTIN
. Carefully pry open the CM128 and locate the two screws for
mounflng.
. Attach to the wall using the two screws and wall anchors provided
if mounting to a plaster wall. lf using a recessed wall box do not
use ancnors.
NOTE: Do not overtighten screws. The wall button supplied with your opener is pre-programmed to your
opener in the factory. lf adding a new wall button, follow the steps below.
@wnrtess
PRaaRAMMING
Fix any wall controt at a height of at least 1.5m and with-
in sight of the door but away from any moving parts.
NOTE: The transmitters supplied with your opener are pre-pro-
grammed to your opener in the factory. lf you purchase additional
transmitters, you will need to program them into your opener using
the steps below.
. Fix the warning against entrapment label near the
wall control.
ADDING transmitters using the "learn" button
. Press and hold down the transmitter button you wish to program
to lhe oDener.
. The orange LED will flash continuously to indicate it is receiving
signal from the transmitter.
. Press and release the "learn" button on the opener.
. The courtesy light will flash once.
. Ensure the door is clear of obstruction, then test the transmitter.
Deleting ALL transmitters and codes
NOTE: This deletes all transmitters and codes.
. Press and hold the "learn" button until the orange indicator light
goes out (approximately 9 sec).
TO ADD Transmitte|s / Wall Control
or
Press and hold down the desi.ed
button.
*.,
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LED wit flash cont,nuousty
Press and release
the red learn button
-,R
Courtesy light will
flash once
TO DELETE ALL TRANSI\,4ITTERS
Press and
hold lhe red
learn bution
**
('F
LED will lishtup
LED willgo out
after (approx) I
seconds. Release
learn button
1 q
a
I

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