LiftMaster Commercial Door Operator - MAXUM DC Trolley - TDC
For reliable, straightforward automation of standard-lift sectional doors, look no further than the Trolley TDC Commercial Door Operator. This operator is the industry standard for commercial applications, utilizing a robust I-beam trolley system for dependable performance day after day. At its heart, a powerful DC motor provides a smooth and quiet operation, reducing stress on the door and creating a more pleasant work environment. Designed for durability and consistent use, the Trolley TDC is easy to install and maintain, making it a practical choice for service bays, commercial garages, and other standard-lift door systems. Trust the Trolley TDC for the perfect blend of strength, simplicity, and lasting value.
Liftmaster MAXUM DC Trolley Commercial Door Operator
TDC
- Motor and Gearbox purpose built to meet the high demands of commercial applications.
- 3-button control with 4-line LCD display for setup and programming from the floor level.
- Up to 33% faster than standard commercial door operators, allowing you to get shipments in and out quickly. Average speed is 12” per second.
- Optional Battery Backup accessory helps keep your door running even when the power goes out—ensuring safe and continuous operation.
- Diagnostics at floor level through myQ® Facility on your mobile device allows you to see when there is a problem and anticipate maintenance cycles.
- Built-in Wi-Fi® lets you easily connect to myQ Facility software, allowing you to get valuable data and insights to improve operations.
- Security+ 2.0® virtually eliminates radio wave interference and offers extended range.
See all the specs and more at the Manufacturer’s Website:
Liftmaster MAXUM DC Trolley Commercial Door Operator
LiftMaster CHAINGUARD3IN, CHNGUARD Instruction Sheet
LiftMaster JDC, RJDC, JHDC, TDC Installation Manual
LiftMaster MAXUM Commercial Door Operator Overview
2025 LiftMaster Commercial Door Operator Comparison

Fast
At an average speed of 12” per second, the operator quickly opens doors to help your business stay efficient and profitable. Plus, the floor LCD display allows you to easily track your maintenance schedule—reducing downtime.
Smart
Soft-start & Soft-stop gives the operator a longer lifespan while Battery Backup ensures that it will keep running—even in a power outage. With embedded Wi-Fi connectivity out the of box, you can use myQ Facility software to access data and analytics to improve your business.


Simple
Floor-level wall control makes the operator easier to control and check for preventative maintenance. The modular design enables both right and left-side mounting with a single unit—making the operator flexible to the needs of your application.
Diagnostics
With myQ Diagnostics you can know your maintenance schedule and be alerted when there is a problem to reduce time on tools and increase safety.

myQ Connectivity
Connect to myQ Facility allowing you to see and control what is happening at your facility’s commercial doors from anywhere.
Specifications
Soft Start / Stop | Yes | myQ Compatibility | Works with myQ, myQ Facility, or myQ Enterprise |
Wi-Fi | Yes | Battery Backup | Capable w/ accessory kit DC45AH or DC7AH |
Duty Cycle Per Hour p/h & Per Day p/d | Standard – 20 cycles p/h /90 p/d | Extended – 30 cycles p/h /150 p/d | Speed/Per Second | Faster speed, 12” on average for sectional and 8–9 inches for rolling steel doors |
Motor Type | 24VDC Motor Drive | Dual handing for installs | Right or left no longer required for order |
Power | 120V/240V (1PH/3PH); 480V (3PH); 208V & 600V (3PH) available with transformer accessory | Monitored Safety Inputs | 3 Inputs |
Radio Receiver | Security + 2.0 | Warranty | Standard Duty – 2 to 5 Years, or 85,000 Cycle Extended Duty – 2 to 5 Years, or 130,000 Cycles |