Liftmaster HDSL24UL Heavy-Duty Variable Speed Slide Gate Operator

Brushless DC Variable Speed Slide Gate Operator w/ myQ

The LiftMaster HDSL24UL is a 24V DC continuous-duty brushless slide gate operator built for heavy-duty commercial, industrial, and high-security vehicular gate applications across UL 325 Class I through IV. It handles slide gates up to 3,000 lbs and 75 ft with variable speed control adjustable from 0.5 ft per second to 1 ft per second. The direct drive 40:1 gear ratio and brushless motor with soft start and soft stop deliver precise gate movement across the full speed range. The 1/4 in black powder-coated steel chassis resists corrosion, and the high-density UV-resistant polyethylene 1-piece cover protects internal components in outdoor installations. Two 12V 7AH batteries are included for backup operation, and the solar-ready design supports off-grid and solar-supplemented installations.

The HDSL24UL includes the Security+ 2.0 3-channel on-board radio receiver, compatible with up to 50 remote controls (unlimited with model 811LMX or 813LMX). myQ technology enables remote monitoring and gate control from anywhere via cellular or Wi-Fi connection. Wireless dual-gate communication with bi-part delay or synchronized close synchronizes bi-parting gate operation without conduit runs or driveway cuts. Four programmable auxiliary relays accommodate warning lights, alarms, and additional accessories. The operator is Fire Department compliant, opening automatically upon loss of AC power or battery depletion, and includes a manual release. Anti-tailgate and quick close capabilities are programmable, and HomeLink version 4 and higher is supported.

Key Features

• 24V DC brushless motor; direct drive 40:1 gear ratio; continuous duty with soft start/stop
• Variable speed control from 0.5 to 1 ft per second
• Gates to 3,000 lbs and 75 ft; UL 325 Class I, II, III, and IV. UL listed
• Ships as a complete kit with photoeye, edge sensor kit, batteries, chain, and all hardware included
• Two 12V 7AH batteries included; solar-power capable
• myQ compatible; Security+ 2.0 3-channel receiver; up to 50 remote controls (unlimited with 811LMX/813LMX)
• Wireless dual-gate communication; bi-part delay or synchronized close; no conduit runs or driveway cutting required
• 4 programmable auxiliary relays for warning lights, alarms, and accessories
• Fire Department compliant; auto-opens on AC or battery loss; manual release included
• Anti-tailgate and quick close programmable
• 6 monitored safety inputs (main and expansion board)
• LED diagnostic display; electronic limit setting
• HomeLink compatible (version 4 and higher)
• 5-year commercial warranty; 7-year residential warranty

Technical Specifications

• Model: HDSL24UL
• Motor: 24VDC brushless, continuous duty, soft start/stop
• Gear Reduction: Direct drive 40:1
• Maximum Gate Weight: 3,000 lbs
• Maximum Gate Length: 75 ft
• Operating Speed: 0.5 to 1 ft per second (variable)
• UL Classification: Class I, II, III, IV
• Compliance: UL 325 listed
• Input Power: 120/240VAC, single phase, switchable
• Accessory Power: 24VDC, 1A max; switched and unswitched
• Radio Receiver: Security+ 2.0, 3-channel; up to 50 remotes (unlimited with 811LMX/813LMX)
• Safety Inputs: 6 total (main and expansion board)
• Auxiliary Relays: 4 programmable
• Battery Backup: 2x 12V 7AH batteries included
• Solar Ready: Yes
• Operating Temperature: -4°F to 140°F (-20°C to 60°C) without heater; -40°F to 140°F (-40°C to 60°C) with optional heater
• Chassis: 1/4 in black powder-coated steel
• Cover: High-density UV-resistant polyethylene, 1-piece
• Operator Weight: 172 lbs
• Dimensions: 26.53 in H x 18.14 in W x 20.39 in D
• Included: Operator, cover, LMRRUL monitored retro-reflective photoeye, 5 ft. edge sensor kit (S505AL), 2x 12V 7AH batteries, 2 keys, 2 warning signs, installation manual, Chain #40 30 ft with master link, eye bolt kit, documentation packet
• Optional: Heater kit, plug-in loop detector, monitored wireless edge kit
• Warranty: 5 years commercial; 7 years residential
• Manufacturer: LiftMaster / The Chamberlain Group
• Condition: New

Conclusion

The included LMRRUL retro-reflective photoeye and 5 ft. edge sensor kit (S505AL) together satisfy the minimum two independent monitored entrapment protection devices required per UL 325 entrapment zone. This unit ships as a complete kit with everything needed for installation and immediate operation.