Chamberlain C253 Guide De L'utilisateur page 11

Electrical and Wiring
For installation with pre-wiring, see Electrical and Wiring step 8 in the Installation
Manual.
Electrical and Wiring 8 - Wire the Safety Reversing Sensors
Without Pre-Wiring
1. Run the wire from both sensors to the garage door opener. Attach the wire to the wall and ceiling with
staples.
2. Strip 7/16" (11 mm) of insulation from each set of wires. Separate the wires. Twist the white wires
together. Twist the white/black wires together.
3. Insert the white wires into the white terminal on the garage door opener. Insert the white/black wires into
the grey terminal on the garage door opener. To insert or remove the wires from the terminal, push in the
tab with a screwdriver tip.
To continue, go to Electrical and Wiring 10 in the
Installation Manual
Insulated Staple (Not Shown)
1
Staple
3
11
HARDWARE
2
7/16" (11 mm)