Model # FM138-75

Internet #203642201

Store SO SKU #1000110241

Mighty Mule 75 ft. Wired Driveway Vehicle Sensor

Mighty Mule

75 ft. Wired Driveway Vehicle Sensor

  • Compatible with all Mighty Mule swing and slide gate openers
  • Enjoy "hands free" exiting of your property
  • Designed for the "Do-it- Yourself" Installer
$17900 /each
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Frequently Bought Together

Product Overview

The Wired Driveway Vehicle Sensor allows a vehicle to drive past the sensor’s 12 ft. electromagnetic field that will open your gate automatically, allowing guests the ability to exit without a Remote (FM135). This sensor detects vehicles such as cars, trucks, ATV's and motorcycles as they cross through the 12 ft. electromagnetic field. The FM138-75 is compatible with all Mighty Mule Driveway Gate Openers and Mighty Mule Slide Gate Openers.

  • Easy DIY (do it yourself) installation to your Mighty Mule control box
  • Also available in lengths including 100 ft. (FM140) and 150 ft. (FM141)
  • Wireless driveway vehicle sensor (FM130) also available for installation
  • Backed by a 12 month Mighty Mule warranty and technical support
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Brand/Model Compatibility
Mighty Mule Gate Openers
Fencing Product Type
Gate Opener Part/Accessory
Part/accessory type
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
12 Month Mighty Mule Warranty

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Customer Questions & Answers

Can two of these automatic gate sensors be wired to the same fm 350?

Asked by: Anonymous
And yet, one customer tried this and he said the gate continuously opened and closed. Perhaps he had the gate too close to the sensor when open?
Answered by: Oliver
Date published: 2017-03-19

Will a riding mower activate the vehicle sensor?

We just purchased the MM FM500 gate opener (not installed yet), and I am looking at accessories for it. My lawn maintenance crew comes 2 to 3 times a month, if they enter the 12' zone with a riding lawn mower, will it activate the gate to open? I have 3 dogs that run loose in the yard, so gate must remain closed unless entering or exiting, and would hate to see it opening and closing with each pass of the mower.
Asked by: Enygma
Hello Enygma, Depending on how large the riding mower is, the wired vehicle sensor could be activated. To ensure the gate is not opened by a riding mower, I would recommended using digital keypads (model #'s MMKPD or FM137-PED) for entry and exiting of your property. This would enable you to give a specific entry and exit code to your lawn maintenance crew. Thank you,
Answered by: GTOSupport
Date published: 2016-03-01

What happens when two or three vehicles follow each other by the sensor?

I am wondering what happens if the first vehicle activates the gate and 10 seconds later another vehicle or two drive by the sensor.
Asked by: BigW
BigW, Thank you for posting your question. When using a vehicle exiting sensor, the gate will stay open for as long as you have the auto close time function set to. The auto close time can be adjusted from 3 to 120 seconds. If another car approaches the gate opening sensor while the gate opener is attempting to close, the gate would simply open back up. If a car leaves your property and 10 seconds later another car leaves your property while the gate gate is in the fully opened position, the auto close time would just reset to the time you have it adjusted to. Thank you,
Answered by: GTOSupport
Date published: 2016-02-03

I would like to run a mighty mule m200 on a 5 watt solar panel. Will I need any additional power sources for the sensor?

Asked by: Rob
Hello Rob, Thank you for posting your question.The FM200 light duty gate opener is designed and indented for use with a 12 volt automotive or marine type battery (not included) for powering the gate opener system. Please refer to the solar panel and gate activity chart located in the installation guide on the FM200 product page to see the appropriate amount of solar panel wattage that is required for the area you live in. A minimum of 5 watts is required when operating your FM200 gate opener with a solar panel and additional accessories such as the wired vehicle sensor. Thank you!
Answered by: GTOSupport
Date published: 2015-11-13
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Customer Reviews

75 ft. Wired Driveway Vehicle Sensor is rated 4.3 out of 5 by 3.
Rated 5 out of 5 by from opening wand works great but go with 100 ft you'll be alot happier
Date published: 2012-02-21
Rated 3 out of 5 by from good product The gate opener serves it purpose to keep people out and to control who comes on our property. The gate is very slow to open and slow to close, which sometimes allows our dogs to get out. Wish we could change the timing to get it to close faster. Overall, a great product. We would purchase it again
Date published: 2014-05-20
Rated 5 out of 5 by from Wonderfull Accesory I puchased the mighty mule gate system and needed the magnetic sensor for exiting the property. It was shipped promply and came with easy install instuctions. I couldnt live without it.
Date published: 2006-05-30
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