--- product_id: 79443014 title: "Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500)" brand: "mighty mule" price: "984.13 DT" currency: TND in_stock: false reviews_count: 10 url: https://www.desertcart.tn/products/79443014-mighty-mule-automatic-gate-opener-for-heavy-duty-single-swing store_origin: TN region: Tunisia --- # 12V battery backup DIY installation kit Heavy duty for 850 lbs gates Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) **Brand:** mighty mule **Price:** 984.13 DT **Availability:** ❌ Out of Stock ## Summary > πŸšͺ Unlock effortless security with the mightiest gate opener in town! ## Quick Answers - **What is this?** Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) by mighty mule - **How much does it cost?** 984.13 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/79443014-mighty-mule-automatic-gate-opener-for-heavy-duty-single-swing) ## Best For - mighty mule enthusiasts ## Why This Product - Trusted mighty mule brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Smart Safety Tech:** UL-approved obstruction sensing and adjustable auto-close for peace of mind - β€’ **Powerful & Reliable:** Handles gates up to 18 ft or 850 lbs with commercial-grade strength - β€’ **Backed by Confidence:** 18-month warranty plus expert technical support keeps you covered - β€’ **Effortless DIY Setup:** Comes with interactive video and all hardwareβ€”no electrician or welding needed - β€’ **Energy-Savvy & Solar Ready:** Compatible with 10W solar panel for up to 30% energy tax credit savings ## Overview The Mighty Mule FM500 is a heavy-duty automatic gate opener designed for single swing gates up to 18 feet long or 850 pounds. Featuring a 12V battery backup, UL-approved obstruction sensing, and adjustable auto-close, it offers reliable, energy-efficient operation. The all-inclusive DIY kit includes an installation video and hardware, enabling easy setup without professional help. Compatible with solar power for additional savings, it’s backed by an 18-month warranty and dedicated support. ## Description Product Description Automatic opener for single gate use, opens gates up to 18' long & up to 850 lbs, solar compatible, 12V battery backup for power failure, kit includes: opener, entry transmitter, mounting hardware, 12V transformer, control box , installation instructions & video, standard features include adjustable automatic closing 0 to 120 seconds & adjustable obstruction sensing. From the Manufacturer Have you ever wanted to be able to open your gate with the touch of a button? With a Mighty Mule automatic gate opener, you can, and you can install it yourself! The Mighty Mule FM500 Single Gate Opener is a heavy duty, commercial grade swing gate opener that is very easy to install. It is ideal for gates weighing up to 850-Pounds, or up to 18-Feet long. The FM500 comes with a standard Do-It-Yourself kit, which includes an installation video, detailed manual, battery, one transmitter, all mounting hardware, and an 18 V AC transformer. This durable opener features Soft Start/Soft Stop, Adjustable Auto Close (0-120 Seconds), Adjustable Gate Activation Alert, UL approved Obstruction Sensing Systems, as well as an extra large Control Box that is prewired for an optional second battery (we recommend a second battery for solar and for dual applications). The 12 Volt, DC-powered low-voltage system is powerful, dependable and durable. Ideal for gates that open into the property (standard in kit) or with gates opening out from the property using a Push-To-Open Bracket FM148 (sold separately). Low Voltage wire req'd for most installations (sold separately). Review: works perfectly - This opener replaced the GTO1000 that operated perfectly for 13 years. I chose the FM500 because I needed a push to open unit. Plus it seemed beefier than the FM350 and didn't require a car battery. using the video and manual, I installed the unit in about 2 hours. I followed the instructions to set the open stops and it was perfect on the first attempt. The piece that bolts to your gate has slotted holes so that if you drill your holes centered in the slot, you easily adjust your closing stop moving the gate piece. It comes with only one remote, but I had 3 left over from my previous opener. I was easily able to set my old remotes to the new code. Simple to install. Easy to adjust stops, timed closing and other remotes. Works perfect. If one month from now, I start experiencing the issues other people have, I'll adjust my review. Review: mighty mule auto gate - We live on the north Oregon coast... this actually our second Mighty mule. Eventually they need to be replaced... however, we live directly on the ocean front... salt air kills everything eventually. One thing I can say is that Mighty Mule customer service is pretty good. When we've had questions they are available and helpful. We purchased a bit heavier, stronger version this go around and I expect to get many years of use with this one as we had with the old one. We have a single gate that is chain link in construction about 15 feet long. It's not terribly heavy, but again, we are on the ocean front so we carefully maintain the motor and moving parts. We use in with buttons in our vehicles and have the remote inside the house for when we are not in our vehicles. I never hesitate to update my reviews if new info would be useful. I also respond to questions/comments. My goal is to help real buyers with my honest, uncompensated opinions. ## Features - The FM500 is rated the Best in Class for Heavy Duty Gate Operators. - Mighty Mule's strongest single swing gate opener for gates up to 18 ft. long or 850 lbs. - Perfect for all gate types including ornamental, chain link, tube, panel, vinyl and wood. - Easy DIY (Do It Yourself) installation that includes an interactive DVD for added assistance. - All-inclusive kit that does not require welding or an electrician. - 30% Residential Energy Efficient Property Tax Credit available! Residential home owners can use this credit on a new operator system, accessories and installation with the purchase of a Mighty Mule 10-watt Solar Panel (FM123). - Backed by an 18 month Mighty Mule Warranty and Technical Support. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0007PANGO | | Batteries Included? | Yes | | Batteries Required? | Yes | | Customer Reviews | 3.8 3.8 out of 5 stars (162) | | Date First Available | May 23, 2006 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 30.5 pounds | | Item model number | FM500 | | Manufacturer | Mighty Mule | | Part Number | FBA_FM500 | | Power Source | corded-electric | | Product Dimensions | 17 x 46 x 7 inches | | Size | 12 | | Voltage | 12 Volts | | Warranty Description | Limited 18 Month Warranty (from date of purchase) | ## Images ![Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) - Image 1](https://m.media-amazon.com/images/I/81Kw72N1E3L.jpg) ![Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) - Image 2](https://m.media-amazon.com/images/I/81NMtpMMTYL.jpg) ![Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) - Image 3](https://m.media-amazon.com/images/I/91myJpR-JEL.jpg) ![Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) - Image 4](https://m.media-amazon.com/images/I/A1-s-GCBy+L.jpg) ![Mighty Mule Automatic Gate Opener for Heavy Duty Single Swing Gates for 18 Feet Long or 850 Pounds (FM500) - Image 5](https://m.media-amazon.com/images/I/6152iLh80TL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ works perfectly *by M***K on December 23, 2013* This opener replaced the GTO1000 that operated perfectly for 13 years. I chose the FM500 because I needed a push to open unit. Plus it seemed beefier than the FM350 and didn't require a car battery. using the video and manual, I installed the unit in about 2 hours. I followed the instructions to set the open stops and it was perfect on the first attempt. The piece that bolts to your gate has slotted holes so that if you drill your holes centered in the slot, you easily adjust your closing stop moving the gate piece. It comes with only one remote, but I had 3 left over from my previous opener. I was easily able to set my old remotes to the new code. Simple to install. Easy to adjust stops, timed closing and other remotes. Works perfect. If one month from now, I start experiencing the issues other people have, I'll adjust my review. ### ⭐⭐⭐⭐⭐ mighty mule auto gate *by F***G on September 10, 2016* We live on the north Oregon coast... this actually our second Mighty mule. Eventually they need to be replaced... however, we live directly on the ocean front... salt air kills everything eventually. One thing I can say is that Mighty Mule customer service is pretty good. When we've had questions they are available and helpful. We purchased a bit heavier, stronger version this go around and I expect to get many years of use with this one as we had with the old one. We have a single gate that is chain link in construction about 15 feet long. It's not terribly heavy, but again, we are on the ocean front so we carefully maintain the motor and moving parts. We use in with buttons in our vehicles and have the remote inside the house for when we are not in our vehicles. I never hesitate to update my reviews if new info would be useful. I also respond to questions/comments. My goal is to help real buyers with my honest, uncompensated opinions. ### ⭐⭐⭐⭐ Replacement *by J***S on March 1, 2012* Just purchased another FM500 to replace one in use for 5 years. Started having opener show signs of wear and need of service. On cold days which warm up say 20F morning to 60F+ in afternoon. Gate will overtravel open position signaling ( Long Beep ) with slack in linear drive. This opener is used 4-6 times a day every day. All that is necessary is push gate towards close, cycle power and close gate. If temperature is more steady or no heavy wind no problem noted. Overall for the price with 5 years of use a great product. Some learning curve with it when new. Unit has Solar 5 Watt Panel and 2 batteries. Been through 10 days without sun, Ice 1" thick during that time, Electric lock operating having to clear ice from arm and lock.Unit has a few instructions that are critical to follow to the letter follow them. I am pleased enough to purchase another unit. Batterys need replaced about 2 years, one going before the other. Plan to repair old unit and place on second gate used less.Price at Amazon best found. With Prime Shipping. I do CNC and Industrial control repair just to let you know --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/79443014-mighty-mule-automatic-gate-opener-for-heavy-duty-single-swing](https://www.desertcart.tn/products/79443014-mighty-mule-automatic-gate-opener-for-heavy-duty-single-swing) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-08*