Liftmaster Model MJ Commercial Garage Door Opener

LIFTMASTER MJ

Medium-Duty Jackshaft Operator

Model MJ is a Medium Duty Logic jackshaft operator. It features a compact design, an adjustable friction clutch, a standard solenoid brake and a high-starting torque motor.

For use on smaller, lighter commercial doors with mid-range duty-cycle requirements.
Rated duty cycle: Maximum 12 cycles per hour; Less than 50 cycles per day.
Floor level disconnect disengages operator manual lifting in an emergency.
Wall mount for high or vertical lift sectional doors or small rolling doors and grilles.

STANDARD FEATURES
INCLUDED ACCESSORIES
OPTIONAL ACCESSORIES
DOCUMENTATION

Business Safety and Security

Security+® – Built-in 3-Channel Security+ Receiver allows you to learn/program up to 20 LiftMaster 315 MHz remote controls.
Safety Standards – Meets UL 325 Safety Standards.
Commercial Safety Sensors – Protect people and vehicles with safety sensors and accessories that stop the door from closing on obstructions.
Timer to Close – Integrated timer-to-close programmable from 5 to 60 seconds in 5-second increments. Allows for timed automatic door closure after the door reaches the full open position.

Commercial Power

115 Volts – 1/2 HP, 115V single-phase motor
NEC Class – 24V NEC Class 2 control circuit

Commercial Accessories

Single Button Control – Single button control provides an additional input for single-button control functionality. Required for installation of any external radio receiver.
Auxiliary Limit Switches – Auxiliary limit switches provide additional limit switches with dry form C contacts at the open and closed door positions to control lights, heaters and dock levelers.
Interlock Switch – Interlock switch disables the operator control circuit when door is locked, preventing damage to the door and operator.

3-BUTTON STATION

Model #: 02103

Included with LiftMaster® Medium-Duty Commercial Operators. OPEN/CLOSE/STOP allows complete control of the door.

COMMERCIAL PHOTO EYES

Model #: CPS-U

Standard photo-eye included with Logic 5.0 and Medium-Duty Commercial Operators. Primary monitored entrapment protection with NEMA 1 enclosure.

3-BUTTON OPEN/CLOSE/STOP REMOTE CONTROL

Model #: 333LM

Red, yellow and green actuators for easy identification. Accommodates commercial operators requiring open, close and stop functions or three-channel light control. Easy code selection, 9-position DIP switches with 19,683 changeable codes per channel.

WIRELESS KEYPAD

Model #: KPW250

Perfect For Larger Commercial Applications Or Gated Entrance For A Small Business. Flexible Setup For Multiple Users With 250 Permanent PINs And 10 Unique Temporary PINs. Programs to All LiftMaster Gate and Door Operators. Manual Gate Operation* With Constant Pressure Override Feature.

RED/GREEN TRAFFIC LIGHT

Model #: RGL24LY

The red/green traffic light dramatically reduces the chance of damage to your door and engine. The light will change from flashing Red to solid Green when the door reaches the full open position, indicating when it is clear to exit.

LIGHT CURTAIN

Model #: 825LM

Provides up to 33 ft. of protection range and a minimum of 36 in. of height coverage to keep your customers, employees and equipment safe. Eight LEDs per side and 22 cross-beams produce an invisible curtain of infrared light for maximum detection capability.

MONITORED DUAL-SIDED PHOTO EYES

Model #: CPS-OPEN4

Flexible housing protects against direct water-spray and corrosion. Dual-Sided infrared sensors. Meets UL 325 Safety Standards. Dual-sided infrared sensors with a maximum range of 45 ft. Solid sensor lights indicate correct sensor alignment. Polarized cables for proper signal continuity and feedback. Meets UL 325 Safety Standards.

Liftmaster MJ Brochure

Owners Manual
Model MJ

User Guide Model MJ

STANDARD FEATURES