Mighty Mule FM502 Dual Swing - Blue Board - Manual (Page 30)

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Setting Your Personal Transmitter Code
All GTO transmitters are set to a standard code at the factory and are ready to operate your Mighty Mule® Gate Opener ® .
For your safety and security, however, we strongly recommend that you replace the factory setting with your own personal
code. Follow the directions below:
TESTING YOUR CLOSED LIMIT SETTING:
Press your entry transmitter and allow your gates to close. If CLOSED positions are not correct or need to be changed, you
will need to CLEAR your CLOSED LIMIT settings and follow Steps 1-7 again.
CLEARING PROGRAMMED CLOSED LIMIT SETTING:
If you make a mistake and set the limit at the wrong position – press your transmitter to return the gates to their fully opened
positions, then press and hold the 'LEARN MAST LIMIT' or 'LEARN SLV LIMIT' button for 5 seconds. This will clear the
memory for the closed limit positions. Follow Steps 1-7 again.
3. “Teach” the New Code to Control Board Memory
A. Press and hold transmitter button.
B. Press and hold the LEARN RMT (Learn Remote) button
on the control board until the buzzer sounds.
C. Release transmitter button. The new code
is stored in control board memory.
D. Release the LEARN RMT (Learn Remote) button.
Learn Remote
Button
1 2 3
4
ON
DIP
STATUS
LEARN RMT
LEARN
MAST LIMIT
LEARN
SLV LIMIT
S3
S4
S2
ART OFF
G OFF
PULL
EN DLY.
OFF
OFF
ON
ON
PUSH
SIMULT.
ON
ON
120 MIN MAX
CLOSE TIME STALL FORCE
2. Set the transmitter DIP Switches
There are nine (9) transmitter DIP switches; each can be placed in three different
positions (+, 0, –). DO NOT set all the switches in the same position, such as all +,
all 0, or all –. Once the DIP switches have been set to a personal code, replace front
cover.
WARNING: No other adjustments should be made inside the transmitter.
1. Remove the Transmitter Cover
On the back of the transmitter use a small phillips head screw driver to remove
the two screws on the sides of the visor clip and separate the front cover from the
transmitter. With the front cover removed, the battery and the DIP switches will
be exposed. To set a new code, use a small screwdriver to move the switches.
+
0
ECE
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
EC E
A23S 12V
ALKALINE BA
TTER
Y
+ 0 –
LE D