Installing Your Cm128 Wireless Wall Button; Wireless Programming; Adding Transmitters Using The Lrn Button; Deleting All Transmitter Codes - Chamberlain Merlin Professional MR850 Installation And Operating Instructions Manual

.
sec).
TO ADD Transmitters / Wireless wall button
or
Press and hold down the desired
Button.
LED will FLASH
professional
LRN Press LRN
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MR850
Release LRN button when
professional Courtesy LEDs
flashes once
TO DELETE ALL REMOTES
professional
LRN Press LRN for 9 seconds
After 9 seconds all remotes
are deleted and LED will go
out.
+
LED on WILL TURN ON