LiftMaster Slide Commercial Door Operator | SD

LiftMasterSKU: LIF-SD501L5L

Model: LH Slide Door w/ Brake SD501L5L / 1/2 HP / Single Phase (115V/230V)
From Price:
Sale price$1,501.50

LiftMaster Heavy Industrial-Duty Slide Logic 5.0 Commercial Door Operator | SD

The LiftMaster SD operator is ideal for single and bi-parting sliding doors in standard duty-cycle commercial applications. Standard-Duty cycles up to 25 cycles/hour and up to 90 cycles/day (using continuous-rated motor).


  • 3-Button Indoor Surface Mount Station (NEMA 1) 02-103L
  • Commercial Photo Eyes CPS-U

Business Connectivity

Monitor and Control
myQ technology enables monitoring and control of the operators through a mobile app.

Real-time alerts
Indicate the status of doors via email.

LiftMaster Business Connectivity Monitor and Control


  • OPERATOR SPEED 11-12 Inches per second
  • LIMIT SETTINGS Mechanical
  • EMERGENCY DISCONNECT FOR MANUAL OPERATION Floor-level emergency release sash chain
  • EMERGENCY DISCONNECT WITH AUTO-RECONNECT Reconnects when tension is removed from emergency release sash chain
  • PROGRAMMING Control function selector dial/tactile buttons
  • CIRCUIT BOARD Solid-state Logic 5.0 circuit board
  • TIMER-TO-CLOSE Programmable in 1 second and 15 second increments up to 68 minutes, standard
  • CLUTCH Standard adjustable friction clutch
  • MID-STOP Programmable
  • RUN TIME PROTECTION Maximum run timer
  • MOTOR REVERSE ACTION PROTECTION Delay-on-reverse circuit
  • MOTOR OPERATOR WALL CONTROL 3-Button Control Station with Maintenance Alert System (MAS)
  • TROLLEY TRACK Dual L-rail trolley track
  • PUSH BUTTON STATION 3-Push button station (Open/Close/Stop)

Installation Features:

  • MAXIMUM DOOR HEIGHT 22 feet standard with additional capability
  • MAXIMUM DOOR WIDTH 24 feet standard with additional capability
  • MAXIMUM ALLOWABLE SQUARE FOOTAGE 480 square feet; double for bi-part
  • INTERNET CONNECTIVITY myQ® Technology enables remote monitoring and control of the commercial door via a smartphone, tablet, or computer (LiftMaster Internet Gateway and myQ app required.)
Commercial Door Operator Lifestyle Facility


myQ Technology enables monitoring and control of the facility operators through a mobile app.

Grid View to efficiently monitor all the doors in the facility.

Real-Time Alerts indicate the status of doors via email or push notifications.


Security+ 2.0 safeguards facility access with rolling code technology, opening for registered devices only.

Timer-To-Close can be programmed to close the door after a set amount of time.

The Commercial Protector System auto-reverses the door if an entrapment protection devices detects an obstruction.


Continuous-Duty High-Starting Torque Motor performs in demanding industrial overhead door applications.

Warranty 2 years

Product Literature

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