Mighty Mule Wireless Digital Keypad (FM137), Black, 25
Quick take
The Mighty Mule FM137 is a wireless, weather-resistant keypad for controlling compatible Mighty Mule automatic gate openers. It lets you manage up to 25 PIN codes, including temporary codes that can expire after 1 to 7 days, and it can be installed wirelessly within about 50 feet. The main practical tradeoff is power, it runs on 3 AA batteries (not included), and heavier or harsher conditions may reduce long-term durability.
Pros and cons
Pros
- Wireless keypad designed for Mighty Mule automatic gate openers.
- Up to 25 PIN codes, with temporary codes that can expire in 1 to 7 days.
- Easy DIY setup, many users report straightforward replacement installs.
- Works with RF connectivity and has a listed wireless range of up to 50 feet.
Cons
- Battery powered only, you will need to plan for periodic battery replacement.
- Built from plastic, and some buyers report reduced lifespan when exposed to moisture or heavier traffic.
- For some newer gate opener setups, pairing steps may differ from older guidance, so expect to follow the instructions that match your opener.
What buyers think
Buyer-review evidence is broadly positive around installation ease and daily functionality. Multiple buyers describe the keypad as a reliable replacement, including smooth operation with their Mighty Mule opener and a solid, usable key feel. Many also mention good practical results when installed for outdoor access, with at least some users taking light steps to reduce rain exposure. The most consistent limitations in review themes are long-term durability in moisture-prone or higher-use situations, and the need to rely on batteries. Overall, the review evidence points to the FM137 as a convenient, capable entry-access accessory when it matches the right opener and is installed with outdoor conditions in mind.
What it is and how it fits Mighty Mule gate setups
The Mighty Mule FM137 is a digital keypad accessory for automatic gate openers. Instead of using a key or remote, you can enter a PIN code to activate the gate. It is designed to pair with Mighty Mule automatic gate opener systems (not just any keypad for any gate), making compatibility the first decision factor.
Key features that matter day to day
PIN codes and temporary access
With support for up to 25 different PIN codes, the keypad is set up for families, regular contractors, or property access needs where multiple people may require entry. It also supports temporary codes that can be programmed to expire within 1 to 7 days, which is useful for short-term access like deliveries, maintenance visits, or guest stays.
Wireless installation range
The FM137 is made for wireless setup within about 50 feet of your opener control box. For many residential gate installations, this keeps wiring work minimal, and the keypad can be placed where it is easiest for authorized users to reach.
DIY programming and wireless operation
Programming is described as user-friendly and built around PIN management. Buyers frequently report that setup is straightforward, particularly when replacing an older keypad on an existing Mighty Mule system.
Compatibility and installation considerations
This keypad is intended to work with Mighty Mule automatic gate openers. The compatibility list includes models such as MM271, MM272, MM371W, MM372W, MM571W, and MM572W. If your opener model is different, it is worth double-checking compatibility before buying.
It can operate wirelessly, and it is also described as supporting wired applications using a specific low-voltage wire (sold separately). In reviews, some buyers also note that setup steps for newer opener systems may require pairing from the opener control box, so plan to follow your opener’s current pairing instructions during installation.
Battery power and outdoor durability tradeoffs
The FM137 is battery powered and requires 3 AA batteries (not included). That is convenient because it avoids electrical wiring for the keypad, but it does mean you are responsible for monitoring and replacing batteries over time.
On durability, buyer feedback suggests the keypad holds up well for typical residential use. However, there are mentions of plastic cracking and moisture-related issues after a few years for some users, especially when exposed to rain or when used in a more frequent, higher-traffic access scenario. If you are mounting it outdoors, consider whether you can add practical rain protection and keep it positioned to reduce direct water exposure.
Pros and cons recap
- Best for: homeowners and small property managers using compatible Mighty Mule automatic gate openers who want keyless entry, multiple PINs, and temporary expiring codes.
- Who should buy: buyers who value DIY installation and want a straightforward keypad replacement for an existing gate system.
- Who should avoid or reconsider: buyers who need a keypad with powered-by-an-outlet operation (this is battery only), or buyers expecting heavy commercial-style traffic plus constant moisture exposure without any additional protection.
Price and availability
The FM137 is typically sold as an affordable keypad accessory relative to higher-end keypad options in the same brand lineup. If you are comparing value, weigh the convenience of battery wireless setup against any expected maintenance (battery swaps) and the outdoor conditions at your installation site.
Verdict
The Mighty Mule FM137 wireless digital keypad is a strong match if you have a compatible Mighty Mule gate opener and want practical keyless access with multiple PINs and temporary expiring codes. It looks and feels built for everyday residential use, and buyers commonly report smooth replacements. Just go into the purchase knowing it is battery powered and that outdoor moisture and higher-than-average usage can affect long-term durability.
FAQs
How many PIN codes can the Mighty Mule FM137 keypad store?
It can hold up to 25 different access PIN codes.
Do temporary codes expire?
Yes. Temporary codes can be programmed to expire within 1 to 7 days.
Is the FM137 keypad wireless, or does it need to be wired?
It is designed for wireless installation within about 50 feet of the opener control box. Wired applications are also possible using the appropriate low-voltage wire sold separately.
What power does the keypad use?
It runs on 3 AA batteries (not included). It is not designed to run on separate external power.
What Mighty Mule gate opener models are compatible?
The keypad is listed as compatible with models including MM271, MM272, MM371W, MM372W, MM571W, and MM572W.
Is the keypad weather resistant?
It is described as weatherproof and water resistant, but some buyers still recommend practical rain protection to improve real-world durability in moisture-prone setups.
Is it difficult to install and program?
DIY programming and setup are described as straightforward, and many buyers report quick installations, especially when replacing an existing keypad on a Mighty Mule system.
Specifications
| Product Title | Mighty Mule Wireless Digital Keypad (FM137), Black, 25 |
|---|---|
| Category | Electronics > Security & Surveillance > Home Security Systems |
| Brand | Mighty Mule |
| Manufacturer | Mighty Mule |
| Model Name | Wireless Digital Keypad for Automatic Gate Opener |
| Model Number | FM137 |
| Color | Black |
| Product Dimensions | 10"L x 5"W x 3"H |
| Compatible Devices | MM271, MM272, MM371W, MM372W, MM571W, MM572W |
| Connectivity Technology | RF |
| Additional Features | Wireless and wired installation, programmable with up to 25 different PIN codes, additional security features |
| Keyboard Backlighting Color Support | Single Color |
| Power Source | Battery Powered |
| Switch Type | Membrane |
| Keyboard Layout | QWERTY |
| Hand Orientation | Ambidextrous |
| Button Quantity | 25 |
| Water Resistance Level | Water Resistant |
| Number of Keys | 3 |
| Style Name | Keypad |
| Theme | Number |
| Item Dimensions L x W x H | 10"L x 5"W x 3"H |
| Enclosure Material | Plastic |
| Keyboard Description | Membrane |
| Antenna Location | Everyday Use |
| Built-In Media | 1 digital keypad |
| Global Trade Identification Number | 00090835062007 |
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