Heavy-Duty Sliding Gate Automation for Commercial and High-Traffic Applications
The LiftMaster SL3000501UL is a powerful 1/2 HP AC slide gate operator designed for high-cycle commercial environments where performance, safety, and reliability are critical. As the upgraded version of the SL3000U, this new model meets 2018 UL325 compliance standards, delivering enhanced protection, smarter connectivity, and robust continuous-duty operation.
Ideal for facilities, apartment complexes, storage facilities, and large commercial lots, the SL3000501UL provides smooth, quiet operation, reinforced by a gear-driven transmission, Security+ 2.0® encryption, and MyQ® technology for remote monitoring and control.
What’s Included
- LiftMaster SL3000501UL Slide Gate Operator (1/2 HP AC Motor)
- LMRRUL Monitored Retroreflective Photo Eye (w/ Protective Hood)
- 5' Resistive Safety Edge (S505AL)
- 25 ft. #41 Black Oxide Chain
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Two FREE Remote Transmitters with Visor Clips
(Note: Remote model may vary depending on availability)
Note: For wireless safety edge connections, it is recommended to add the LiftMaster Wireless Kit (LMWEKITU) to minimize wiring issues.
Key Features
High-Cycle Performance
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1/2 HP P3 Motor: Purpose-built for heavy-duty commercial applications.
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Gate Capacity: Rated for gates up to 37 ft in length and 1,000 lbs.
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Speed: Opens gate at approx. 12 inches per second.
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Gear-Driven Transmission: Ensures consistent power and long-term durability.
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Manual Release Handle: Allows quick gate operation in emergencies.

Smart Connectivity with MyQ®
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Remote Monitoring & Control: Use the MyQ app to manage gate access from anywhere.
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Real-Time Notifications: Receive email or text alerts on gate activity.
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No Annual Fees: MyQ mobile app is free (requires 828LM Internet Gateway).
Safety & UL325 Compliance
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Included Safety Devices: Monitored photo eye + 5' resistive safety edge ensure compliance.
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Security+ 2.0® Radio Receiver: Eliminates interference and doubles the range of standard remotes.
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Quick Close & Anti-Tailgate: Automatically closes gate after a vehicle enters to prevent unauthorized access.
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Loop Detector Inputs: Detect vehicles to trigger exit or stop gate travel if obstruction is present.
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Plug-In Safety Inputs: Add more safety reversing devices for each entrapment zone.

Technical Specifications
Specification |
Details |
Model |
SL3000501UL |
Motor Type |
1/2 HP AC, Gear-Driven |
Power Supply |
120V/230V Single Phase |
Gate Capacity |
Up to 37 ft / 1,000 lbs |
Speed |
~12 in/sec |
Motor Duty Cycle |
High-Traffic / Continuous Operation |
Accessory Output |
24VDC, 500mA (switched/unswitched) |
Chain Type |
#41 Black Oxide, 25 ft included |
Safety Devices |
LMRRUL Photo Eye + S505AL Safety Edge |
UL Rating |
UL325 Class I, II, III, IV |
MyQ Compatible |
Yes (requires 828LM Gateway) |
Weight |
Approx. 140 lbs |
Warranty |
7 Years Residential / 5 Years Commercial |

Optional Accessories (Sold Separately)
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828LM MyQ Internet Gateway – Required for mobile app integration.
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LMWEKITU Wireless Safety Edge Kit – Enables wireless connection for included safety edge.
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Keypads, Loop Detectors, Access Panels – Customize your entry and exit configurations.
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Backup Power Supply – Add uninterrupted power in case of outages.
Frequently Asked Questions (FAQs)
Q: What is the main upgrade from the previous SL3000U model?
A: The SL3000501UL includes an upgraded control board, UL325-compliant safety systems, and MyQ connectivity support.
Q: Does it come with all required safety equipment?
A: Yes. This model includes a monitored photo eye and a 5’ resistive safety edge to meet UL325 standards.
Q: Can I use it with MyQ smartphone control?
A: Yes. You’ll need to add the 828LM Internet Gateway for app control and remote notifications.
Q: Is it ready for commercial use right out of the box?
A: Yes, it's designed for high-traffic, commercial-grade usage with all critical components included.
Q: Who can help with installation or support?
A: Call our experts at +15056052205 or email support@gatemasterpros.com for assistance.
Important Notes
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UL325 Compliance: Two monitored safety devices are required. This unit includes both.
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Wiring Tip: For cleaner installations, consider adding the optional wireless safety edge kit (LMWEKITU).
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Remote Model Disclaimer: Actual remote model shipped may vary based on availability.
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Professional Installation Recommended for optimal safety and performance.
Product Manuals