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. Download Specs Download Manual