Product Overview
The Mighty Mule SW4000XL Swing Gate Opener is a 4000XLS-family swing gate operator built for heavier residential, ranch, estate, and light commercial vehicular swing gate applications. This style of opener uses a linear actuator arm to pull or push the gate leaf through its travel, while the control box manages battery charging, limit behavior, receiver input, accessory commands, and obstruction response. It is a good fit when the customer needs a low-voltage swing gate system with battery backup and the option to use a compatible solar charging setup instead of running high voltage out to the gate.
The important detail on this item is the model generation. The 4000XLS series is not just a cosmetic name change from older XL equipment. XLS operators use updated rev-counter and reed-switch position technology, improved mounting and sealing details, and different control requirements. For that reason, a 4000XLS arm, control box, or second-arm setup should be matched to the correct XLS parts diagram instead of being mixed casually with older 4000XL or 4200XL parts.
This operator is commonly selected for single swing gates up to 20 ft. long and up to 1000 lb. per leaf when the gate moves freely and the installation follows the required mounting geometry. Gate condition matters as much as operator size. A sagging gate, tight hinges, weak post, dragging wheel, or incorrect bracket placement can cause nuisance reversing, slow travel, poor locking, or premature wear even when the opener size looks correct on paper.
Compatible With
Select Linear Pro Access, GTO PRO, and Mighty Mule Pro 4000XLS single swing gate systems; residential and light commercial vehicular swing gates up to 20 ft. or 1000 lb. per leaf when properly installed; pull-to-open installations and push-to-open applications when the control board and brackets are set for that layout; solar-charged or transformer-charged 12 VDC installations; single gate systems that may be expanded with a matching PRO-SW4200XLS second arm for a dual swing layout. Also commonly paired with compatible GTO/Linear/Mighty Mule access controls, 318 MHz receiver/transmitter setups supplied with the kit, vehicle exit devices, keypads, automatic gate locks, and approved gate safety accessories. Verify by parts diagram and model generation, because XLS arms and controls should not be mixed with older XL-series controls unless the manufacturer confirms the combination.
Features & Specifications
| Manufacturer | Mighty Mule / Linear |
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| Product Type | Automatic swing gate opener |
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| Part Number | PRO-SW4000XLS |
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| Application | Single vehicular swing gate automation |
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| Compatible Operator Type | Linear actuator swing gate systems |
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| Voltage | 12 VDC operator system with battery backup charging by transformer or compatible solar charging setup |
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| Maximum Gate Size | Up to 20 ft. long and up to 1000 lb. per gate leaf when installation requirements are met |
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| Gate Speed | Typically 18 to 20 seconds depending on gate setup and conditions |
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| Safety Monitoring | UL 325 compliant system with inherent obstruction sensing; do not bypass required safety devices |
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| Included Components | Operator arm, control box, battery backup, radio receiver, entry transmitter, AC transformer, and mounting hardware for standard post-mounted installation when supplied as a complete kit |
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| Notes | XLS-series arms and controls use updated rev-counter/reed-switch technology and should be verified against older XL equipment before mixing parts |
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Also Known As / Related Part Numbers
PRO-SW4000XLS, SW4000XLS, PROSW4000XLS, PRO SW4000XLS, LPA PRO-SW4000XLS, Linear 4000XLS, GTO PRO 4000XLS, Mighty Mule Pro 4000XLS, PRO-SW4200XLS second arm, SW4200XLS, SW4000XLS-Dual, SW4000XLS Dual, PRO-SW4002XLS and 4000XLS/4200XLS dual gate kit references.
Technician Note
When replacing an existing operator, do not rely only on the outside label or a similar-looking arm. Confirm the complete model number, board generation, arm length, mounting brackets, and whether the system is single or dual. If the gate was previously converted from XL to XLS parts, review the full system before ordering additional components.
Before Ordering Checklist
- Confirm the gate is a vehicular swing gate, not a pedestrian gate.
- Measure the gate leaf length and estimate the gate weight.
- Verify that the gate swings freely without dragging or binding.
- Confirm whether the installation is pull-to-open or push-to-open.
- Match the existing model number and generation: XL and XLS parts may not interchange.
- Review safety devices, access controls, lock wiring, and solar or transformer charging needs.
Professional Advisory
Automatic gate operators can cause serious injury if installed or adjusted incorrectly. Do not bypass obstruction sensing or required safety devices. If the gate is heavy, binds, moves unpredictably, or requires electrical troubleshooting beyond normal low-voltage accessory checks, use a qualified gate technician.
Product Questions
Is the PRO-SW4000XLS for a single or dual swing gate?
The PRO-SW4000XLS is the primary single swing gate operator. A dual swing gate setup normally uses this operator with the matching PRO-SW4200XLS second arm and the correct dual-gate control configuration.
What size gate is this opener intended to move?
The 4000XLS series is commonly rated for vehicular swing gates up to 20 ft. long and up to 1000 lb. per leaf when the gate is level, swings freely, and is installed with the correct mounting geometry.
Can this opener be used with solar power?
Yes. This 12 VDC operator family is commonly used with transformer charging or a compatible solar charging setup. Solar performance depends on panel size, battery condition, shade, and daily cycle count.
Can an XLS arm replace an older XL arm?
Do not assume that an XLS arm is interchangeable with older XL-series control boards or arms. Match the original model, control board, and parts diagram before ordering.
What should be checked before replacing a complete gate opener?
Check gate length, gate weight, hinge condition, post strength, pull-to-open or push-to-open layout, accessory wiring, safety devices, and whether the existing system is XL or XLS generation.
