Liftmaster HDSL24UL Heavy-Duty Variable Speed Slide Gate Opener

Heavy-Duty Slide Gate Operator for High-Security and Industrial Gates

The LiftMaster HDSL24UL is a premier heavy-duty slide gate operator engineered for demanding commercial, industrial, and high-security applications. Designed for continuous-duty cycles, it handles gates up to 75 feet long and 3,000 pounds, delivering powerful performance with its 24VDC brushless motor and direct-drive 40:1 gear reduction system. Featuring variable speed control (0.5 to 1 ft/sec), full battery backup, and solar power capability, the HDSL24UL ensures uncompromising reliability even during power outages. Integrated myQ® technology, wireless dual-gate communication, and anti-tailgate programming further reinforce perimeter protection while streamlining remote operation and system integration.

Key Features

• Heavy-duty continuous-duty operator rated for gates up to 75 ft and 3,000 lbs
• 24VDC brushless motor with soft start/stop and high-efficiency direct drive
• Variable speed control adjustable from 0.5 ft/sec to 1 ft/sec
• Battery backup included for uninterrupted operation during power failures
• myQ® technology for secure remote monitoring and control
• Wireless dual-gate communication eliminates costly trenching and wiring
• Six monitored safety inputs plus expansion capability for maximum entrapment protection
• Solar-ready design with energy-efficient operating profile
• Fire department compliance with auto-open feature on AC loss or battery depletion
• Class I, II, III, IV UL 325 certified for all usage environments
• 5-year commercial / 7-year residential warranty

Technical Specifications

• Model: HDSL24UL
• Motor Type: 24VDC brushless with direct drive 40:1 gear reducer
• Power Supply: 120/240VAC single phase (optional 3-phase conversion)
• Maximum Gate Length: 75 ft
• Maximum Gate Weight: 3,000 lbs
• Speed: 0.5 to 1 ft/sec (variable)
• Operating Temperature: -4°F to 140°F (without heater); -40°F with optional heater
• Accessory Power: 24VDC, 1A max (switched and unswitched)
• Chassis/Frame: ¼" powder-coated steel construction
• Cover: UV-resistant high-density polyethylene
• Battery Backup: Dual 12V 7AH batteries standard (33AH optional for solar)
• UL Usage Class: I, II, III, IV (residential, commercial, industrial, restricted access)

Conclusion

The LiftMaster HDSL24UL sets the standard for high-security, heavy-duty slide gate automation, delivering unmatched durability, advanced access control capabilities, and compliance with the most stringent UL and ASTM safety standards. Built for mission-critical perimeter protection, it combines modern connectivity, powerful mechanical design, and robust fail-safe features into one elite solution trusted by security professionals worldwide.