Chamberlain Contractor Series Manual page 28

Power
3 Ensure the Door Control is Wired Correctly
Models: 8155W, 8160W, 8160WB, 8165W
If the door control has been installed and wired correctly, the command LED behind the
push bar will blink.
Push bar
COMMAND LED
Models: 8164W
If the door control has been installed and wired correctly, the LED behind the push
button will blink (883LMW).
Push
Button
883LMW
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