Liftmaster J5011L4 Industrial Duty Jackshaft with Safety Beams
For continuous-duty use this is one of the best commercial garage door openers available today. This high-quality product includes safety beams as well as a high-starting torque motor.
• Timer-to-close function 1-sec or 15-sec increments with timed automatic door closure.
• Maintenance Alert System™ creates a routine maintenance schedule and includes a self-diagnostic system
• Three-channel, 315MHz radio receiver accepts up to 23 Security+ or unlimited DIP switch remotes
• Diagnostic LEDs speed installation and troubleshooting
• Continuous-duty high-starting torque motor with instant reverse and overload protection
• Adjustable friction clutch included for damage protection
• Emergency disconnect for emergency manual operation
• PosiLock Mechanical Brake System (self-locking mechanical reduction system)
• Includes two-year warranty