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DDO8900W

Commercial Dock Door Operator - For full vertical or high-lift sectional commercial and dock doors, opens 50% faster in the up direction. LMi5 Sensor Connection Box monitors up to 5 external sensors around the dock door with myQ® Facility. Easily connect the operator to the facility's network with built-in Wi-Fi®.

Commercial Power

UL Listed

Reduce Maintenance
Extend hardware life and reduce maintenance with smooth start/stop operation.

Current Rating
120V AC, 60Hz Voltage, 2.0A Current Rating

Ensure Access
Ensure access to the facility when the power's out by adding Battery Backup (485LM, optional accessory).


Business Safety and Security

Security+ 2.0®
Safeguard facility access with Security + 2.0 technology, opening for registered devices only.

Commercial Safety Sensors
Protect people and vehicles with safety sensors and accessories that stop the door from closing on obstructions.

Safety Standards
Meets UL 325 Safety Standards.


Business Connectivity

Monitor and Control
myQ Smart Facility Access is a cloud-based software solution that delivers real-time data and analytics to a commercial facility.

myQ Dock Management
Analyze the load, turn and dwell time at each dock in the facility and make data-driven decisions that allow you to maintain insight from the perimeter to the dock space.

myQ Smart Facility Access

Annual subscription to myQ Facility, first three months included.

041A5034
SAFETY SENSOR KIT

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041A6104
CABLE EXTENSION MONITOR KIT

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02103
3-Button Station

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  • HomeLink® Compatible
    Compatibility Bridge™ (not included) necessary for certain vehicles. Visit bridge.liftmaster.com to find out if a Bridge is needed.
    HomeLink® is a registered trademark of Gentex Corporation.

TRAVEL MODULE WITH WIRE HARNESS KIT
041B8861
Parts Diagram Reference:2

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Transformer, 12V, RJO
041C0296
Parts Diagram Reference:3

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MOTOR, DC, 12V, RJO
041D1624-2
Parts Diagram Reference:4

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POWER CORD, RJO
041D0190
Parts Diagram Reference:5

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COVER, RJO
041D9042
Parts Diagram Reference:6

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3-Button Station
02103
Parts Diagram Reference:8

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CABLE TENSION MONITOR KIT
041A6104
Parts Diagram Reference:9

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SAFETY SENSOR KIT
041A5034
Parts Diagram Reference:10

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MOUNTING BRACKET KIT, RJO
041B6228
Parts Diagram Reference:11

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SAFETY SENSOR BRACKET KIT
041A5266-3
Parts Diagram Reference:12

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DOOR SHAFT COLLAR, RJO
041D8615
Not shown on diagram

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California Residents: Proposition 65 WARNING

PRE-SENSOR
TRAILER PRESENCE SENSOR

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WS-SENSOR
MECHANICAL LIMIT SWITCH

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LM56A
Proximity Reed Switch

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841LM
Automatic Garage Door Lock

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485LM
Garage Door Opener Battery

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LMI5
Sensor Connection Box for myQ Dock Management

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