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Mighty Mule Automatic Gate Opener for Heavy-duty Single Swing Gates for 18 ft. Long or 850 lb., MM660

SKU # 121226299
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Item Information

Open your gate with the push of a button with the Mighty Mule M660, designed for single swing gates up to a maximum of 18 ft. long or maximum weight of 850 lb. for all gate types of gates including chain link, tube, panel, vinyl and wood. Most popular uses include ornamental driveway gates or large agricultural gates that are exceptionally large or in demand of high cycle (open/close) installations. The MM660 is Mighty Mule's strongest and most durable gate opener that can be utilized for many applications including residential, agricultural, farm & ranch, etc. The MM660 and all Mighty Mule automatic gate openers are solar capable with the addition of a Mighty Mule 5W Solar Panel (Model # FM121) or 10W solar panel (Model # FM123).This opener comes equipped with Mighty Mule's exclusive Dual Sense Technology, this meets UL325 ft.s 6th Edition Standards for additional protection & safety. The Mighty Mule Dual Sense Technology provides users with additional safety and precaution without the need of secondary entrapment device, such as photo eye sensors (Model # R4222). Please note that all gate opener installations are unique and may require additional protection devices based on the type of installation. The MM660 kit includes everything needed for installation except for a 12V Automotive or Marine Type Battery that produces a minimum of 250 cold cranking A (CCA). The MM660 kit includes: MM660 gate operator, 2 Single Button Remotes (Model # FM135), AC transformer (Model # RB570), all required hardware and a detailed installation manual with an interactive DVD for ease of installation. The MM660 provides an installation DVD & unlimited access to 24 hour technical support and is backed by a 24 month Mighty Mule Warranty and Technical Support. Additional accessories such as remote controls (Model # FM134 or FM135), keypads (Model # FM136 or FM137), solar panels (Model # FM121 or FM123) and vehicle exit sensors (Model # FM138, FM140, FM141 or FM130-SW) all can be purchased on Tractorsupply.com.

  • Designed for heavy-duty single swing gates up to a maximum of 18 ft. long or maximum of weight of 850 lb.
  • Its commercial grade soft start/stop extends the life of the gate opener
  • Ideal for the DIY (Do It Yourself) property owner, the MM660 comes equipped with detailed instructions, installation DVD & unlimited access to 24 hour technical support
  • Perfect for all single gate types including ornamental, chain link, tube, panel, vinyl and wood
  • Includes: 2 single button remotes (Model # FM135), AC transformer (Model # RB570), all required hardware and a detailed installation manual with an interactive DVD
  • Features Mighty Mule's exclusive Dual Sense Technology that meets UL325 6th Edition Standards for additional protection & safety
  • Solar Capable: With the addition of a Mighty Mule 5W Solar Panel (Model # FM121) or 10W solar panel (Model # FM123)
  • Backed by a 24 month Mighty Mule Warranty and technical support

Note: This product may require up to 2 additional days for order processing prior to shipping

Specification Description
Battery Type: 12 V
Brand: Mighty Mule
Gate Type: Single Swing
Maximum Gate Length: 18 ft.
Product Type: Gate Openers
Power Type: Battery
Manufacturer Part Number MM660
Mighty Mule Automatic Gate Opener for Heavy-duty Single Swing Gates for 18 ft. Long or 850 lb., MM660 is rated 3.9 out of 5 by 39.
Rated 1 out of 5 by from Terrible company and terrible product I bought this for the front gate is my sanctuary and nothing on it worked as advertised. It is super slow and the entire system I bought had to be replaced by mighty mull. I’m waiting for the third system to show up in the mail. The first and second one they sent were faulty and I’ve spent 3 in labor from haveing the first two installed for them to not work. I will never buy nor recommend this company to anyone. Spend the extra money and go with a better brand. I should have.Tractor supply should stop selling this company’s products.
Date published: 2018-09-13
Rated 5 out of 5 by from Great replacement We bought this to replace the Mighty Mule 350 this gate opener is much more durable I like the fact that the control box is separate instead of on the unit it has nice audible tones before and after opening the gate and slows down at the very beginning and end of the gate operation very happy with it.
Date published: 2018-09-02
Rated 2 out of 5 by from Still trying to fine tune it. Not as simple as they claim, started out good, but, it didn't last. Gate won't close all the way, even after setting per instructions. Opens ok, but could be better. Overall, I'm still trying to figure out if I can keep my sanity.
Date published: 2018-08-11
Rated 5 out of 5 by from Easy install So far I have had my mighty mule installed for about a month now and am extremely happy with purchase. Was a fast and simple install. Along with the solar charger I have had virtually zero issues with my gates operation.
Date published: 2018-08-05
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Does m660 close the gate after going through it without using remote

Asked by: Susan59
Hi Susan, yes the MM660 has an Auto Close feature that can be set to have the gate opener close up to 120 seconds after being opened. This feature is optional and can be turned off if you would prefer to close the gate with your remote.
Answered by: GTOSupport
Date published: 2017-05-12

Will this work with a 14ft. gate?

Asked by: matt6969
Hi Matt, yes this gate opener will work on a gate that is 14 ft. in length. When we rate our gate length capabilities, they include all gate lengths up to 18 ft. long.
Answered by: GTOSupport
Date published: 2017-07-28

Will i need any additional hardware for a push to open gate? My gate needs to open outward from my property?

Asked by: Chandler92
Hi, yes you will need to order a Push To Open Bracket (Model # FM148). Please note 2 are needed for a dual installation, 1 per gate opener arm.
Answered by: GTOSupport
Date published: 2017-11-13

This is a heavy duty for a 18' gate , can it be used for a 15' gate ?

Asked by: Arts
Arts, Thank you for taking the time to post your question. This Mighty Mule Gate Opener is rated for single swing gates up to a maximum of 18 ft. long or maximum weight of 850 lbs.. It can be used on a gate that is 15' long. Thank you!
Answered by: GTOSupport
Date published: 2018-06-30

does it have feature to open with loop and automatic close

Asked by: mym MM
mym MM, Thank you for taking the time to post your question. A Mighty Mule Vehicle Exiting senor can be be added to any Mighty Mule opener, (Model # FM130-SW, or FM140). Each Mighty Mule Gate Opener features an adjustable auto close timer, this timer can be adjusted to auto close from 3 - 120 seconds after the opener is in the closed position. Thank you,
Answered by: GTOSupport
Date published: 2018-06-30

can additional remotes be purchased for the mm660 opener

Asked by: wtcon
Hi, yes you can add an unlimited amount of remotes (Model # FM134 or FM135) that are available on TractorSupply.com or available at your local Tractor Supply store.
Answered by: GTOSupport
Date published: 2017-10-04

Can I buy two of these and wire them together to open a double set of gates at the same time.

Asked by: davidwatts613
Hi David, if you are interested in opening a dual gate we offer the MM562 that can handle the same size gate as the MM660 but is designed to open a dual gate. It includes 2 gate opener arms that are wired together to open both gates simultaneously.
Answered by: GTOSupport
Date published: 2018-06-21

18 ft is its max .. will the MM660 work on a 16 ft tube gate?

Asked by: Cujo
Hi, yes the MM660 is able to work on a tube gate that is 16 ft.
Answered by: GTOSupport
Date published: 2017-05-20
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