GDI Wiring Harness Length Per Foot G3343

• If over 10' is required

LiftMaster Industrial-Duty Jackshaft 1/2 HP 115/230V 1Ph L5

• Doors used with this operator should be balanced with the ability to be manually lifted by hand in an emergency or power outage.
• The operators are typically mounted to the wall when used with smaller sectional overhead doors with a vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
• J operators are attached to the door jackshaft to indirectly drive the door
• MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
• Security+ 2.0® safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you

LiftMaster Industrial-Duty Jackshaft 1/2 HP 575V 3Ph L5 ***Discontinued

• Doors used with this operator should be balanced with the ability to be manually lifted by hand in an emergency or power outage.
• The operators are typically mounted to the wall when used with smaller sectional overhead doors with a vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
• J operators are attached to the door jackshaft to indirectly drive the door
• MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
• Security+ 2.0® safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you

LiftMaster Industrial-Duty Jackshaft 3/4 HP 115/230V 1Ph L5

• Doors used with this operator should be balanced with the ability to be manually lifted by hand in an emergency or power outage.
• The operators are typically mounted to the wall when used with smaller sectional overhead doors with a vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
• J operators are attached to the door jackshaft to indirectly drive the door
• MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
• Security+ 2.0® safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you

LiftMaster Industrial-Duty Jackshaft 3/4 HP 575V 3Ph L5

• Doors used with this operator should be balanced with the ability to be manually lifted by hand in an emergency or power outage.
• The operators are typically mounted to the wall when used with smaller sectional overhead doors with a vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
• J operators are attached to the door jackshaft to indirectly drive the door
• MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
• Security+ 2.0® safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you

LiftMaster MAXUM Jackshaft DC Commercial Op. w/BBU 700LB

• Max door height: 40 ft. Max. Sectional doors up to 700 lbs. Rolling steel or insulated doors up to 450 lbs.
• myQ Compatibility: Setup available for either myQ or myQ Facility
• Operating Temperature: Without Heater: -4°F (-20°C) – 140°F (60°C). With Heater: -40°F (-40°C) – 140°F (60°C)
• Heater sold seperately
• Voltage: 120V/240V (1PH/3PH); 480V (3PH); 208V & 600V (3PH) available with transformer accessory
• Motor Power: 24VDC
• Operator Duty Rating: Standard - Up to 20 cycles per hour and 90 cycles per day
• Battery Backup: Standard - 4.5Ah Battery Backup (included)
• Dimensions: 700 lbs. / 9.772” W x 21.7” H x 12.1” D
• CPS-U included
• Sprocket not included

GDI Jackshaft DC 115V

• Brushless DC high reliability high efficiency and low maintenance motor
• No maintenance GearMotor sealed stainless steel bearings no limits switches no belts or no hydraulic cylinders to maintain
• Soft start soft stop

GDI Jackshaft 24VDC Nema 4

• Brushless DC high reliability high efficiency and low maintenance motor
• No maintenance GearMotor sealed stainless steel bearings no limits switches no belts or no hydraulic cylinders to maintain
• Soft start soft stop
• Includes cycle counter timer-to-close 10ft motor wire harness
• Battery backup optional (sold separately)

LiftMaster Main Board w/BBU Maxum 700/1200 JHDC TDC

LiftMaster Light Duty Jackshaft Door Op. for Sectional Doors

• Ideal for smaller/lighter commercial doors with light duty cycle requirements
• MyQ Technology Built-In Wi-Fi Real-Time Alerts
• Smooth Start/Stop
• Optional Accesories 877LM Keypad 827LM MyQ Remote LED light 485LM Battery Back-up 841LM Automatic Door Lock 480LMB Alternate Mounting Kit and LC-36A Light Curtain
• Compatible remotes; 893MAX 891LM 893LM

LiftMaster Light Duty Commercial Jackshaft Op. for Rolling Doors

• Ideal for smaller/lighter commercial doors with light duty cycle requirements
• MyQ Technology Built-In Wi-Fi Real-Time Alerts
• Smooth Start/Stop
• Optional Accesories 827LM MyQ Remote LED light 485LM Battery Back-up 841LM Automatic Door Lock 480LMB Alternate Mounting Kit and LC-36A Light Curtain
• Powerful Add-Ons 811LM and KPW5/KPW250

Doorlec 1/2 HP 115V 1PH Jackshaft Operator Right Hand

• CSA approved
• Heavy duty industrial type control station open close stop 24V. control circuit
• Universal mounting right or left
• Floor level disconnect device electrical and mechanical
• Emergency chain hoist operation on LJH model only
• Colour code wiring diagrams
• Rotary type limit switches readily adjustable in both directions
• Self adjusting solenoid brake
• Friction safety clutch
• Motor removable without disturbing limit adjustment or chain hoist operation
• Heavy duty RC-41 roller chain drive throughout
• All three phase motors totally enclosed fan cool
• Overload and under voltage protection
• Single phase motors capacitor start

Doorlec 3/4HP 115V 1PH Jackshaft Operator

• Nema 4/12 now included (11/2025)

Doorlec 1/2 HP 575V 3PH Jackshaft Operator

• Heavy duty industrial type control station open close stop 24V. control circuit
• Universal mounting right or left
• Floor level disconnect device electrical and mechanical
• Emergency chain hoist operation on LJH model only
• Colour code wiring diagrams
• Rotary type limit switches readily adjustable in both directions
• Self adjusting solenoid brake
• Friction safety clutch
• Motor removable without disturbing limit adjustment or chain hoist operation
• Heavy duty RC-41 roller chain drive throughout
• All three phase motors totally enclosed fan cool
• Overload and under voltage protection

Doorlec 1 HP 575V 3PH Jackshaft Operator

• Model LJH lasts an average of 10 million cycles
• Available with â…“ HP to 1 HP single-phase or three-phase motor and is equipped with self-adjusting solenoid brake
• LJH installation is universal regardless of side (left or right)
• Speed is approximately 1.4 feet per second or about 0.3 meters per second
• Comes equipped with a manual chain hoist

Doorlec 3/4HP 575V 3PH Jackshaft Operator

Doorlec 1/2 HP 208V 3PH Jackshaft Operator Right Hand

• Heavy duty industrial type control station open close stop 24V. control circuit
• Universal mounting right or left
• Floor level disconnect device electrical and mechanical
• Emergency chain hoist operation on LJH model only
• Colour code wiring diagrams
• Rotary type limit switches readily adjustable in both directions
• Self adjusting solenoid brake
• Friction safety clutch
• Motor removable without disturbing limit adjustment or chain hoist operation
• Heavy duty RC-41 roller chain drive throughout
• All three phase motors totally enclosed fan cool
• Overload and under voltage protection

LiftMaster Medium-Duty Logic Gear-Reduced Op. 1/2 HP 115V 1Ph Left Hand

• MGJ is designed for use on rolling grilles and shutters.
• Maximum recommended duty cycle: 12 cycles per hour.
• Heavy-duty wormgear-in-oil-bath speed reducer
• 3-button station for open/close/stop functionality
• 315 MHz radio receiver is integral to the Medium-Duty Logic board
• UL325-2010 Monitored Entrapment Capability (provides primary monitored entrapment protection through monitored photo sensors: either CPS-U or CPS-UN4 or a 4-wire monitored edge using the CPS-EI interface)
• Heavy-duty solenoid actuated brake standard

LiftMaster Medium-Duty Logic Gear-Reduced Op. 1/2 HP 115V 1Ph Right Hand

• MGJ is designed for use on rolling grilles and shutters.
• Maximum recommended duty cycle: 12 cycles per hour.
• Heavy-duty wormgear-in-oil-bath speed reducer
• 3-button station for open/close/stop functionality
• 315 MHz radio receiver is integral to the Medium-Duty Logic board
• UL325-2010 Monitored Entrapment Capability (provides primary monitored entrapment protection through monitored photo sensors: either CPS-U or CPS-UN4 or a 4-wire monitored edge using the CPS-EI interface)
• Heavy-duty solenoid actuated brake standard

LiftMaster Medium-Duty Jackshaft Op 1/2HP 115V

• The MJ door operator is designed for use on vertical lift sectional doors or small rolling doors and grilles.
• Maximum recommended duty cycle: 12 cycles per hour
• Floor level disconnect
• Adjustable friction clutch
• Heavy-duty solenoid actuated brake
• Easily field converted for right or left mounting
• 3-btn station for Open Close Stop functions comes standard