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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
Brand: Mighty Mule
Power Type: Battery
Gate Type: Single Swing
Battery Type: 12 V
Maximum Gate Length: 18 ft.
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 4.5 out of 5 by 169.
Rated 5 out of 5 by from Always have what I'm looking for! Had exactly what I needed and for a reasonable price.
Date published: 2019-08-09
Rated 5 out of 5 by from GREAT PRICE AND INSTALLATION WAS A BREEZE.. Easy install and coustomer service was great to program.
Date published: 2019-08-05
Rated 5 out of 5 by from Gate opener Great purchase. We have used several different types of openers and this unit has performed great.
Date published: 2019-08-04
Rated 5 out of 5 by from Great value!! This Automatic Gare opener works great. Saves a lot of time opening/closing gates .
Date published: 2019-08-02
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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: MightyMuleSupport
Date published: 2017-05-12

Do all of your gate openers have problems with water issues? Our 360 has malfunctioned multiple times and this time it has went out completely due to water. We are looking at the 660 as a replacement but noticed complaints for water issues with it.

Asked by: Ann with an E
From the Vendor, Product Expert: "Hello, thank you for taking the time to post your question. We are sorry to hear you have experienced water issues with your Mighty Mule MM360. To prevent this from happening moving forward, ensure that the seal on the gate openers arm is properly secured. The Mighty Mule MM360 control board is located in the arm of the gate opener, and with the MM660 the control board is located in a separate control box that is intended to be mounted on your gate post."
Answered by: TSCJenny
Date published: 2018-12-12

Trying to decide if I should go with solar panel with my new opener. What is the expected life of the solar panel?

Asked by: Terry 23
Terry 23, Mighty Mule Solar panels are a great power option for you if you don't have a power source by your gate opener installation site. Our Mighty Mule Solar Panel typically have a life expectancy of 5 - 7 years with the recommended solar panel maintenance. For optimal efficiency and product longevity we recommend you periodically clean the solar panel face with a damp cloth.
Answered by: MightyMuleSupport
Date published: 2019-04-16

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: MightyMuleSupport
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: MightyMuleSupport
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: MightyMuleSupport
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: MightyMuleSupport
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: MightyMuleSupport
Date published: 2017-10-04
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