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Overview
The Gate Control Unit (GCU) can be paired with the
Gate Access Panel (GAPLM) to wirelessly control a
gate operator.
The GCU is compatible with various Liftmaster
Wireless Products.
Carton Inventory
Gate Control Unit (GCU)
Assembly
Step 1
Remove cover.
Step 2
Install 4 AA Alkaline batteries
(not provided). (Lithium
batteries recommended for
colder environments.)
Model GCU
Gate Control Unit
Step 3
NOTE: This step applies only if more than one GCU
is being used.
Up to four GCUs can be used. Each GCU will need a
different Identity. Set the Identity of the GCU by
changing the Dipswitches as shown in the chart
below.
GCU ID
Switch #1
Switch #2
1
OFF
OFF
2
ON
OFF
3
OFF
ON
4
ON
ON
Dipswitches
LED
Learn
Button
Programming to GAPLM
Step 4
Press the Learn button on the
GCU for one second. The LED
will light for 20 seconds.
Within 20 seconds enter Master PIN Number on
GAPLM:
?
?
?
?
Followed by GCU Identity as determined in Step 3:
3
4
1
OR
OR
2
OR
“BEEP” “BEEP”
The GCU LED will blink 3 times indicating
programming is successful. If error tone is heard or
GCU LED emits 3 double blinks, then programming
has failed.
Repeat for additional GCUs.
Page 1
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Related Manuals for Chamberlain GCU
Summary of Contents for Chamberlain GCU
- Page 1 NOTE: This step applies only if more than one GCU is being used. Up to four GCUs can be used. Each GCU will need a different Identity. Set the Identity of the GCU by changing the Dipswitches as shown in the chart below.
- Page 2 Operation Open/Close Gate To open a gate enter any valid PIN Number on GAPLM. For multiple GCU’s, enter the PIN Number followed by the GCU Identity (1-4). For a remote control transmitter, press the corresponding button for 3 seconds (within 75' of GAPLM).
-
Page 3: Troubleshooting
There is an error tone when the GCU is activated. The GAPLM or DAILM is not communicating with the GCU. The GCU may be out of range. If the units work properly when close together, the GCU may need to be mounted higher off the ground or on a different surface. - Page 4 Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. © 2008, The Chamberlain Group Inc. 114A3523B...