User's Manual

Mighty Mule 202 29
3. “Learn” the New Code to Control Board Memory
A. Slide the ON/OFF switch to the OFF position.
B. Press and hold the hand held transmitter
button while sliding the ON/OFF switch
to the ON position.
$ $POUJOVFUPIPMEUIFUSBOTNJUUFShTCVUUPO  
until the alarm sounds (3-5 seconds).
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E. Verify that the transmitter operates the gate.
NOTE: It is NOT necessary to remove the cover of the control box to 'learn' the new transmitter
code, but when the control box cover is removed the receiver range is reduced to less than 5 feet.
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 and close the access 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.
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:

0
ECE
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
ECE
A23S 12V
ALKALINE BATT
ERY
+
0
–
LED
Setting Your Personal Transmitter Code
ON/OFF
Switch
ON/OFF
FCC WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment. In accordance with FCC Part 15, Section 15.21, the manufacturer is not responsible
for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could VOID the user
authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. The external solid wire antenna (10”) was assembled in the
equipment under FCC tested and marketing.
However, there is no guarantee that interference will not occur in particular installations. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged
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