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Liftmaster RSL12UL 12VDC Slide Gate Operator (RSL12UL)

Liftmaster RSL12UL 12VDC Slide Gate Operator

RSL12UL features battery backup that provides up to 114 cycles or 63 days of standby power.

  • Solar-Ready, Ultra-Reliable System delivers power when and where you need it.
  • Battery Backup provides seamless access by providing standby power when the power is down.
  • Smooth Start/Stop Operation and mid-travel reversal extend operator hardware life.
  • Commercial Gear-Driven Transmission provides unsurpassed reliability.
  • Warranty 3 years.
  • MyQ® Technology enables you to securely control and monitor your gate operator from anywhere.
  • Wireless Dual-Gate Communication synchronizes gate opening/ closing and eliminates expensive driveway trenching costs.
Safe and Secure
  • Security+ 2.0® safeguards access with an encrypted tri-band signal to virtually eliminate interference and offer extended range.
  • Posilock® prevents gate from an unauthorized manual open.
  • Fire Department Compliance allows gate to auto-open upon loss of ac power or battery depletion. 
  • Manual Disconnect when unlocked allows gate to be opened manually.
  • UL® Listed gate operators with monitored safety entrapment protection devices.
Included Accessories
  • LMRRUL Monitored Retroreflective Photo Eye enhanced retro-reflective photo eye now with heater and wider polarized beam, engineered to stay aligned; max. Range: 50 ft.

  • S505AL Monitored Small Profile Resistive Edge pressure-sensitive edge stops and/or reverses gate when obstructed.

  • 115VAC
  • Solar-Ready, Ultra-reliable System delivers power when and where you need it
  • Accessory Power: 12VDC 500mA output
Commercial Grade Design
  • Chassis: constructed with 1/4 in. gold zinc-plated steel for rust prevention 
  • Cover: 1-piece UV-resistant polyethylene cover 
  • UL® Usage Classification: I, II, III and IV
  • Operator Weight: 100 Lbs.
  • Height: 23.30”
  • Width: 16.24”
  • Depth: 16.76”
Temperature Specifications
  • Without Heater: -4°F (-20°C) to 140°F (60°C)
  • With Optional Heater: (HTR) -40°F (-40°C) to 140°F (60°C)
Gate Travel Speed
  • 10” per second
Standard Features
  • Synchronized Close simultaneously closes gates
  • Quick Close and Anti-Tailgate Quickly secure property, preventing unauthorized access (requires expansion board)
  • Inherent Reversing Sensor Detects obstructions and reverses gate when closing or stops/reverses
  • Monitored Safety Inputs 3 main board, 3 optional expansion board
  • Security+ 2.0® On-Board Radio Receiver Tri -Band 310/315/390 MHz frequency up to 50 remote controls (unlimited with 811LM/813LM)
  • Led Diagnostic Display simplifies installation and troubleshooting Programmable Auxiliary Relays make adding additional features easy 
  • Homelink® Compatible version 4.0 or higher (May require an external adapter depending on the model and year of your vehicle. Visit for additional information.)
This gate operator qualifies for a 30% tax credit

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