Chamberlain B4603TC Manuel D'installation page 26

Installation
STEP 13 Wire the Safety Reversing Sensors
If your garage has pre-installed wiring for the safety reversing sensors, see OPTION B- PRE-WIRED
INSTALLATION page 27.
OPTION A- INSTALLATION WITH NO PRE-WIRING
Run the wire from both sensors to the garage door opener. Attach with staples, but DO NOT
1.
puncture the wire.
Separate the sensor wires and strip insulation from each end. Twist the two white wires together.
2.
Then twist the two white/black wires together.
Using a screwdriver, push in the terminal tabs, and insert the white wires into the white terminal.
3.
Insert the white/black wires into the grey terminal.
Insulated Staple (Not Shown)
1
Staple
Wire channel
3
26
HARDWARE
2
7/16" (11 mm)