Aligning The Safety Reversing Sensors; Ensure The Door Control Is Wired Correctly - Chamberlain C450C Owner's Manual

1 3
2
Wing Nut
1
2
(invisible light beam)
Amber LED
Green LED
SENDING SENSOR RECEIVING SENSOR
If the receiving sensor is in direct
sunlight, switch it with sending sensor so
it is on the opposite side of the door.