Mighty Mule FM137, Instructions Manual

9

Wired Installation of the Keypad 

IMPORTANT

: Remove the batteries from the keypad . The keypad will not work properly if batteries are not first removed .

Step 1

: Turn the gate opener’s power switch OFF . Run wire 

through PVC pipe between the opener control board to protect the 
wire .
Remove the small rectangular knock-out on the back of the 
keypad cover and pull the wire into the cover . Then mount the 
cover to the post using the screws provided . (

Figure 6

)

Step 2

: Strip the wires back 3/16” and attach the wires to the 

terminal block marked OUT COM on the keypad control board as 
shown in (

Figure 7

) making sure to keep track of polarity . Connect 

the other end to the opener’s control board as shown in Control 
Board Connections section below .

NOTE

: For a hard-wired application the 318 MHz RF transmitter 

is automatically disabled .

Knock-out

OUT  

COM

Hard-wire from Gate Opener

#

1

#

2

Step 3

: With the power to the opener turned OFF . Remove opener control board cover and feed enough of the low voltage keypad 

wire through a strain relief to reach the gate opener control board terminals .

Figure 6

Figure 7