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Liftmaster 8355 - Premium Series 1/2 HP AC Belt Drive
Liftmaster 8355 - Premium Series 1/2 HP AC Belt Drive
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Liftmaster 8355 - Premium Series 1/2 HP AC Belt Drive

Item Id: LM-8355
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Your Price:
Choose Options
Operator Assembly
No rail included [+$184.93]
7ft Rail [+$495.68]
8ft Rail [+$519.12]
10ft Rail [+$536.46]
Remote Controls
Control Panels
MyQ Accessories
Universal Receiver
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Liftmaster 8355 Premium Series 1/2 HP AC Belt Drive Garage Door Opener

Includes Safety Sensors and 1 Remote Control

This model comes with MyQ technology, Security+ 2.0, Electronic Limit and Auto-force. Replacement operator for the old 3280 1/2 HP AC Screw Drive.

Smart, Quiet and Energy Efficient

  • MyQ® technology enables you to securely monitor and control your garage door opener and houselights with your smartphone, tablet or computer.
  • Alerts can be received as email or pop-up (push) notifications on your mobile device so that you always know the status of your garage door and houselights.
  • MyQ mobile app is a free download requiring no annual activation fee.
  • P3 Motors from LiftMaster® are reliable, durable and powerful designed specifically for your needs.
  • Liftmaster 8355 1/2 HP AC Belt Drive motor with belt drive system provides quiet, reliable and maintenance free performance.
  • Motor Vibration Isolation System (MVIS®) provides super quiet, smooth operation year after year.
  • Energy-efficient operation consumes up to 75% less power in standby mode.
  • Lifetime motor and belt warranty. 1-year parts warranty.
Safety and Security
  • Security+ 2.0 safeguards your household with every click a new code is sent to the garage door opener so that the door opens only for you.
  • PosiLock® locks down your door by electronically monitoring against a forced opening.
  • Alert-2-Close warning system provides audible and visual warnings when the garage door is about to close when using MyQ technology or Timer-to-Close.
  • The Protector System® has safety sensors that project a light beam across the garage door opening, automatically reversing the door if anything interrupts the beam.
Included Accessories for Liftmaster 8355 1/2 HP AC Belt Drive:
3-Button Remote Control (Liftmaster 893LM):
Allows you to control up to three garage door openers, gate operators or MyQ Accessories.

Multi-Function Control Panel (Liftmaster 882LM)
Enables you to turn garage door opener lights on and off from inside the garage.


Standard Specifications

- Installed Length: 128 .
- Maximum Door Opening: 7 6 .
- Headroom Clearance Required: 2 .
- Up to 10 with optional 8 or 10 rails.

Number of Cartons: 2.
Carton 1: Dimensions and Contents:
- 20 x 12 x 10 .
- 882LM Multi-Function Control Panel.
- 893LM 3-Button Remote Control.
- Garage Door Opener Head.
- The Protector System® Safety Reversing Sensors.
Carton 2: Dimensions and Contents:
- 10 4 x 5 x 5 .
- Assembled Solid-Steel T-Rail (Belt).

Security+ 2.0 Radio Controls
- Coding System: Smart Receiver Code Button and Indicator Light.
- 893LM 3-Button Remote Control.
- Operating Range: 200 (approximately).
- Operating Temperature: -40°F to 150°F.

- Remote Control: 310, 315 & 390 MHz Tri-Band.
- Receiver: Frequency Agile on 310, 315 & 390 MHz.
- Security+ 2.0 Anti-Burglary Coding.

MyQ® Radio
- 902-928 MHz.
- 50 Channel FHSS (Frequency Hopping Spread Spectrum).
- Provides two-way communication from garage door opener and MyQ enabled accessories.
- Enables remote closing of garage door with key MyQ accessories.
- Enables monitoring and control of garage door openers and lighting controls via internet-enabled computer or smartphone.
- Requires LiftMaster® Internet Gateway Accessory Model 828LM.

Security+ 2.0 Encrypted Controls
- 882LM Multi-Function Control Panel.
- Program Remote Controls.
- Maintenance Alert System.

Convenience / Safety
- The Protector System Safety Reversing Sensors
- Alert-2-Close Unattended Close Operation w/ Select - Accessories.
- Emergency/Quick Release
- Automatic Trolley Reconnect
- Down Safety Reverse
- Up Safety Stop
- Door Open/Beam Obstructed/Lights On
- Maintenance Alert System
- PosiLock® secure lock system
- Timer-to-close feature requires purchase of 880LM or 881LM control panel and is for sectional doors only, not one piece doors).

Electrical Specifications

- Voltage: 120V AC, 60Hz.
- Wattage: 540 Total System.
- Current Rating: 4.5A.
- UL Listings: Yes.
- Length of Line Cord: 4 (3-prong).

Energy Efficiency
- Approximately 1 Watt Power in Standby Mode.
- Enhanced CFL (Compact Fluorescent) Compatible.
- Standby Mode at down limit, work lights off.

Logic Type
- Solid State Microcontroller with Built-in Surge Suppressor.

- Number of Bulbs: 2.
- Maximum Wattage: 100 x 2.
- Adjustable Time, Solid-State Delay.
- Enhanced CFL (Compact Fluorescent) Compatible, Max 26 Watts.


- Horsepower: 1/2.
- RPM: 1,625.
- Thermal Protection: Automatic.
- Lubrication: Permanent.

Drive Mechanism
- Drive Means: Full Reinforced Drive Belt.
- Reduction Means: Gear 16:1.
- Door Linkage: Adjustable Door Arm.

- Force: Electronic/Internal Auto Force.
- Limit: Internal Electronic.

Travel Rate
- Approximately 7.0 per second.

Shipping Weights
- Head: 24 lbs.
- Rail: 17 lbs.

- Chassis and Chassis Cover: Steel.
- Rail: Solid-Steel T.
- Trolley: Steel.

- Lifetime Motor Warranty.
- Lifetime Belt Warranty.
- 1 Year Parts Warranty.

HOMELINK® Compatible (version 4.0 or higher) w/QuickTrain Technology


May require an external adapter depending on the model and year of your vehicle.

Liftmaster 893LM 3-Button Standard Remote Control
Liftmaster 893LM 3-Button Standard Remote Control
Your Price: $24.95
Liftmaster 882LM Multi-Function Control Panel
Liftmaster 882LM Multi-Function Control Panel
Your Price: $19.59
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