3
Step 1: Determine the optimum location for the VEHICLE SENSOR using the information found in “Placement
of the SENSOR” on page 2. Then dig a hole approximately 12 inches deep and 24 inches long within 2 feet and
parallel to the edge of the driveway. Next, dig a trench approximately 12 inches deep from this hole to a spot un-
der the gate opener control box to run the cable from the SENSOR to the control board.
Keep the SENSOR and the cable uncovered at this time, but out of direct sunlight.
We recommend that the cable be run in PVC conduit to the control box to prevent damage to the cable from lawn
mowers, weed eaters and grazing animals.
Step 4: Unscrew and remove the lock nut from the
WIRE CLAMP hub (included with hardware). From
the outside of the control box, insert the WIRE CLAMP
hub and sealing nut (see illustration right) into the new
WIRE CLAMP hole. Finger tighten the lock nut onto
the threaded end of the WIRE CLAMP hub from inside
the box.
Installing The WIRE CLAMP: The WIRE CLAMP (includ-
ed) is used to secure the sensor cable where it enters the control box to
prevent it from being accidently pulled out.
Step 2: If you are installing the SENSOR on a Mighty Mule
FM700, FM500 and the FM502 gate openers, use a screwdriver or steel
punch to carefully remove the thin plastic knockout disk (see illustra-
tions at right) at the bottom of the control box. If you have a FM702
dual gate opener system, drill a 7/8” diameter hole at the bottom of the
control box and install the WIRE CLAMP.
Step 3: Use a sharp knife or deburring tool to clean the rough edges
from the hole.
Be careful with tools to avoid contact or damage to the control
board!
Knockout Disk
WIRE CLAMP for
Opener Power Cord
Mighty Mule FM700 & FM702
Control Box
Drill 7/8" diameter
hole for Dual Gate
System
Determining SENSOR Location:
IMPORTANT: Clear an area 20 feet in all directions of metal tools, toys and automobiles,
to prevent magnetic disturbance during testing and installation.
Installing the Vehicle Sensor ...
Gate opener
control box
Driveway
12”
Minimum of 25 feet
SENSOR: 2 feet from driveway
edge and 1 foot in ground
Open gate outside
sensor range
PVC conduit in ground and
up to control box recommended
Knockout Disk
WIRE CLAMP for
Opener Power Cord
Mighty Mule FM500 & FM502
Control Box
Sealing Nut
Hub
Lock Nut
Wire Clam
p
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