The Mighty Mule FM502 is an easy-to-install, low-voltage system that requires no electrician or welding.
- Gate Materials: Light Wood, Light Steel, Aluminum, Vinyl, Chain Link, and others.
- Weight and length: Up to 18' in length or 850 lbs.
- Max degree of opening: 110 degrees
- Gate Post or Column size (pull to open): Max 6" x 6" post or gate mounted 3" from the rear face of a column.
- Push to Open: Yes (bracket purchased separately) - setback above does not apply to push to open.
- Solar Compatible: Yes, browse our solar panels (purchased separately).
- Power: Battery (Not Included) and Low Voltage Trickle Charge (Included).
- Power Wire Specification: 16 gauge wire (purchased separately) with 1,000 foot max length from transformer to control board.
- Operating Temperature: -5 ºF to +160 ºF
- Warranty: 1 year manufacturer control board, 1 year manufacturer component limited warranty.
Mighty Mule FM500/FM502 Gate Capacity Chart 
NR - Not Recommended
Gate Crafters offers more expert assistance than anyone.
If you need help deciding if this gate opener has the abilities that are right for your gate we have live application specialists available 9am - 9 pm EST 7 days a week or try our exclusive gate opener recommendation tool 24 hours/day.
Mighty Mule FM502 Dual Swing Gate Opener The Mighty Mule FM502 Dual Gate Opener can be used in residential applications including automating gates made of farm tubing, steel, aluminum, wood, and chain link, along with many other gate types. This opener can be set on the left or right and is used in the standard pull-to-open operation. By adding the push-to-open bracket accessory (not included) the Mighty Mule FM502 can be used to push the gate open away from the property with the arms still mounted on the inside. The Mighty Mule FM502 Dual Gate Opener is a low voltage system, eliminating the need to run 110 AC to your gate. Simply run 16-gauge low voltage to a household outlet within 1000' of the operator or use a solar panel. With the Mighty Mule FM502's oversized control box you can house (2) 7 amp/hour batteries to accommodate higher opening cycle situations and extra storage for solar. (second battery not included). The Mighty Mule FM502 Dual Gate Opener can be used with GTO Inc.'s complete line of accessories including keypads, transmitters, exit wands, gate locks, solar panels, and more. Gate Crafters has the resources you need.
How do you use your gate opener system once you get it? Gate Crafters is the only retailer to give a real answer to this question. We have develop videos for installing many of our gate openers and products and write DIY focused manuals for most gate openers and have individual instructions for each accessory to be installed with each gate opener.
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- Soft Start/Soft Stop - Soft start/soft stop is a feature in which the control board, during the set up process, learns where your opening and closing points are for the swing of the gate. Then during normal operation the gate operator automatically slows the motion of the gate to smoothly meet with the gates destination point. This feature can also be turned off.
- Closing Timer - Set your gate to close between 0 and 120 seconds after reaching the full open position or turn this option off to leave it open until an entry device activates closing motion.
- Learn Mode - With the Mighty Mule FM502 the learning process, the end points are determined by the user via remote. A simple press of the transmitter tells the opener where to stop and when the opener is set to the desired stop points, save the settings on the board.
- (2) Operator Arms
- Receiver
- Transmitter
- Mounting Hardware
- Charging Transformer
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- Battery
- Control Box with Control Board
- UL325 Certified
- Installation Video
- Manual
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 For over a decade, Gate Crafters has been the leading online retailer of gate openers and accessories. With our extensive technical and installation expertise, we proudly serve the DIY market. We believe that every customer deserves the chance to take pride in their projects, whether they are installing or troubleshooting their gate openers. Everyone should have access to high-quality products without the need of a professional. At Gate Crafters, we empower you to install with confidence by offering access to our trained technical staff seven days a week from 9 AM to 9 PM EST. By choosing to tackle your gate opener system yourself, you can save thousands of dollars over its lifespan while gaining valuable knowledge about your installation and how the system operates. This understanding will not only make troubleshooting easier, but also enable you to perform routine maintenance with confidence in the future. |
Gate Crafters is the DIY factor.
Gate Crafters further adds to most of our gate openers for easier DIY installation. We have developed exclusive components (example: easy adjustable mounting brackets), customized instructions, and offer a full spectrum of accessories to truly cover all aspects of the installation of your gate opener. In addition we have the largest staff of factory trained technicians in the US.
- Order specific customized accessory wiring instructions
- 360 degree accessories - we can take you through exit, entry, safety, power, and all other minute details to create a fully rounded kit.
- Free 24/7/365 Installation Support
- Free 7 day/week Technical Support
- Largest Number of Certified Techs in America
- Free assistance to find the right gate opener for your gate
- Free systems design assistance to match the right accessories to fit your needs.
- Extremely competitive pricing
- Free shipping on all accessories purchased with a gate opener
- We stock replacement parts
- Many brands of many types of accessories, enough to handle just about any operational situation you can imagine
Gate Crafters has actual experience.
We have a testing area, we have factory and internal training courses, we build gates and have our own gates that are automated, we attended all industry trade shows in multiple countries and are a member of the AFA, and we pay visits to our chosen manufacturers' factories. All these factors are what have lead to us having so many exclusive additions. When you see and actually use as many products as we have you tend to have many ideas for minor changes that have major impacts. We acted on these ideas and have utilized them to help thousands of customers automate their gates.
The following tools and supplies are suggested in the manufacturer manual for optimal installation. They are not provided by Gate Crafters, however, most tools are available at local hardware stores for purchase or rental.
- Drill with 3/8" Bit, 5/16" Bit
- Pliers
- Clamp x 2
- Hack Saw
- 1/2" and 9/16" Wrench
- Adjustable Wrench
- Philips Head Screwdriver
- Wire Stopper
- Center Punch
- Hammer
- Large & Small Flat Head Screwdrivers
- Tape Measure
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Please refer to the Installation Manual for Tools Needed.Depending on the type of gate, power supply and contributing environmental factors additional tools or supplies may be needed. Please review the product manual associated with this gate opener model for further details.
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Words from Senior Application Engineer Anthony Geato | Top of Page |
"The Mighty Mule FM502 by GTO Inc. is the largest opener of the Mighty Mule line and best for larger light weight gates. The Mighty Mule FM502 has been widely used for over a decade with a dedication to dependability and quality. They have taken that reputation and asked consumers to apply that same level of loyalty to this new opener. This opener features greater leverage with its long stroke length. Featuring soft start and stop, the Mighty Mule FM502 helps to preserve the life of the gate. When your gate approaches its endpoints the opener will slow the momentum of the gate, this prevents damage to the gate. Another advantage of the Mighty Mule FM502 is the oversized control box. GTO listened attentively to the wishes of their customers and answered with their new design. Customers many times wish to use an extra battery for larger number of cycles, extra power storage for solar. The new control box design has an extra storage space built in for a second battery. Even though this is an easy to install DIY gate opener Gate Crafters is still available for any installation or technical support the installer may need. Gate Crafters has years of experience with GTO Inc. openers as well as many other brands and accessories and is readily available 7 days a week, 9am to 9pm eastern time just by calling our number: 1(800)537-4283. Gate Crafters is dedicated to getting the right gate opener for your gate. As more gate openers are being made economically feasible and easy to maintain, the selection is going to grow ever wider. That's where Gate Crafters comes in. We have extensive amounts of educational material on our website to help you become an informed consumer. We also have our factory-trained representatives standing by to answer all your gate and gate opener questions and match the perfect opener with your gate. The combination of our customers' passion for home improvement and Gate Crafters wealth of knowledge is a perfect match and cannot be duplicated."
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Manual: Mighty Mule FM502 Installation Manual
QB ID: FM502
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