Lift-master 88LM User Manual
Fasten the terminal blocks to the garage walls
between the pre-wiring and the sensor unit
locations as shown in Figure 1.
Figure 1
Model 88LM
©
Garage Door Opener
Pre-Wiring Kit
Drill Hole
Pre-Wiring
Pre-Wiring
5/32"
White
#6 Anchor
Terminal
Block
Terminal
Screws
Sensor
Unit
#6ABx1"
Screw
Sensor
Unit
Location
Approx.
18" Wire
4-6"
↕
PRE-WIRING FOR SAFETY SENSOR SYSTEM
2-Conductor Wire (white and white/black)
on each side of garage door, exiting wall
Figure 2 Figure 3
Sensor
Unit
White
Safety Sensor
White Tab
Sensor
Unit
Location
4-6"
↕
Approx.
18" Wire
White/Black
Separate and strip 1/4" of insulation from the
2-conductor wire exiting the wall on each side of
the garage door. Insert a strand in two of the slots
in the terminal block. Tighten the terminal screws.
White/Black
Terminal
Block
Sensor Wiring
(4 Ft.)
Connector
Insert the connector end of the bell wire supplied into
the sensor and push until you hear a click. The white
tab on the sensor should be flush with the back of the
connector. Attach the other end of the wire to the terminal block following the procedure as described and
shown in Figure 2.
© 1993, The Chamberlain Group, Inc.
114A1670 All Rights Reserved Printed in Mexico
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