Mighty Mule R4690 Loaded Control Box
The Mighty Mule R4690 loaded control box is a replacement control enclosure assembly used on select Mighty Mule and GTO swing gate opener systems. Unlike an empty box, a loaded control box commonly includes the main control board, receiver, battery harness, alarm, on/off switch, strain relief, board standoffs, and cover screws, depending on the package supplied. It is typically ordered when the existing box is cracked, weather damaged, missing components, or has electronics that are no longer dependable after age, surge damage, insects, water intrusion, or wiring failure.
This part is commonly associated with Mighty Mule FM500, FM502, and 2500 series operator applications. It should not be treated as a universal replacement for every Mighty Mule gate opener because newer MM-series control boxes and smaller residential models may use different assemblies. Before ordering, identify the existing operator model, board number, arm cable style, receiver frequency/accessory setup, battery harness, and whether the installation is single or dual gate. If only the board is bad and the enclosure and harness are usable, the R4211/R5211 board alone may be the more appropriate item.
Features & Specifications
| Manufacturer | Mighty Mule / GTO |
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| Product Type | Loaded control box assembly |
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| Part Number | R4690 |
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| Application | Replacement control box for select swing gate operators |
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| Common Compatible Models | FM500, FM502, and 2500 series applications when confirmed |
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| Included Components | Control board, receiver, battery harness, alarm, on/off switch, strain relief, standoffs, and cover screws on common versions |
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| Compatible Operator Type | 12 VDC swing gate opener systems |
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| Single/Dual Use | Model-dependent; commonly used in FM500 and FM502 related applications |
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| Important Note | Verify included components and board generation before ordering |
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| Notes | Not a universal control box for all Mighty Mule models |
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Compatible With
Commonly associated compatibility, when confirmed by model and parts diagram, includes:
- Mighty Mule FM500 single swing gate opener
- Mighty Mule FM502 dual swing gate opener
- GTO / Mighty Mule 2500 series operator references
- Select older Mighty Mule/GTO swing gate installations using the R4690 loaded box
- Systems using the related R4211/R5211 control board platform when confirmed
- Single or dual swing gate applications depending on the exact connected operator setup
- Replacement jobs where the original enclosure, receiver, harness, and board assembly are being replaced together
Also Known As / Related Part Numbers
- R4690
- Mighty Mule R4690
- GTO R4690
- Mighty Mule FM500 R4690 loaded control box
- Mighty Mule FM502 R4690 loaded control box
- GTO/Mighty Mule R4690 loaded control box
- Loaded control box with R4211 control board
- FM500 loaded control box
- FM502 loaded control box
- 2500 series loaded control box
Technician Note
If the original control box failed from water, insects, lightning, or a wiring short, correct the cause before installing the new loaded box. Reusing damaged arm cables or accessory wiring can damage replacement electronics.
Before Ordering Checklist
- Confirm the operator model is FM500, FM502, or another supported 2500 series application.
- Decide whether the customer needs the complete loaded box or only the control board.
- Compare receiver, harness, on/off switch, alarm, and cable entries with the original box.
- Check battery, transformer, solar input, and accessory wiring before powering the new box.
- Reprogram remotes and reset operator adjustments as required after installation.
Professional Advisory
A loaded control box contains low-voltage controls but can still be damaged by incorrect wiring or unsafe charging equipment. Discontinue use if wires are burned, wet, or unidentified, and have the gate serviced before reconnecting power.
Product Questions & Answers
What is included with the R4690 loaded control box?
Common versions include the control board, receiver, battery harness, alarm, on/off switch, strain relief, board standoffs, and cover screws, but the package should be verified.
What models is the R4690 commonly used with?
It is commonly listed for Mighty Mule FM500, FM502, and 2500 series operator applications when confirmed by model and parts diagram.
Is the R4690 the same as the R4211 board?
No. The R4211/R5211 is the control board reference, while R4690 is a loaded control box assembly that may include the board and other components.
Do remotes need to be reprogrammed after replacing the box?
In many cases, remote or accessory programming and operator settings may need to be reset after replacement.
Why replace the whole loaded box instead of just the board?
A loaded box may be better when the enclosure, receiver, switch, alarm, harness, or mounting hardware is damaged or missing in addition to the board.
