LiftMaster 45DCT / 045DCT Receiver Logic Board – Security+ 2.0
LiftMaster 45DCT / 045DCT Receiver Logic Board – Security+ 2.0
LiftMaster
LiftMaster 45DCT / 045DCT Receiver Logic Board – Security+ 2.0
The LiftMaster 45DCT, also identified by LiftMaster as part number 045DCT, is a replacement receiver logic board designed for compatible LiftMaster and Chamberlain DC chain-drive and belt-drive garage door openers.
This board uses LiftMaster Security+ 2.0 wireless technology and is intended for compatible garage door openers manufactured after 2011 that use a yellow Learn button.
The receiver logic board is one of the main electronic control components inside the garage door opener. It processes signals from compatible remote controls and wireless accessories while controlling communication between the opener's electronic systems.
A failed logic board can cause symptoms such as an opener that does not respond properly to remotes, will not enter programming mode, behaves unpredictably, or has other electronic control problems. Proper diagnosis should be performed before replacing the board because similar symptoms can also be caused by wiring, sensors, power problems, remotes, or other opener components.
Features
• Genuine LiftMaster replacement receiver logic board
• LiftMaster part number 045DCT / commonly referenced as 45DCT
• Security+ 2.0 wireless technology
• Designed for compatible DC garage door openers
• Supports compatible DC chain-drive opener applications
• Supports compatible DC belt-drive opener applications
• Intended for compatible openers manufactured after 2011
• Used with yellow Learn button systems
• Receives signals from compatible Security+ 2.0 remotes and accessories
• Replacement for several previous LiftMaster logic-board identification numbers
• Designed to restore the opener's original electronic control and receiver functions when properly matched to the opener
How It Works
The 45DCT receiver logic board functions as the primary electronic control and radio-receiver component in compatible garage door openers.
When a programmed remote control, wireless keypad, or other compatible Security+ 2.0 accessory sends a command, the receiver section of the logic board recognizes the coded wireless signal and communicates with the opener's control system.
The board also interfaces with other electronic components inside the garage door opener. Because the logic board is model-specific, replacing it with a visually similar board does not guarantee compatibility.
After installation, compatible remotes and wireless accessories may need to be programmed or reprogrammed to the replacement board.
Compatibility
LiftMaster specifies the 045DCT for various LiftMaster and Chamberlain DC chain-drive and belt-drive garage door openers manufactured after 2011.
Known LiftMaster compatibility includes:
• LiftMaster 8160 – 1/2 HP DC Chain Drive Garage Door Opener
• LiftMaster 8550 – Battery Backup DC Belt Drive Garage Door Opener
Compatible units use Security+ 2.0 technology and typically feature a yellow Learn button.
IMPORTANT:
Do not order this logic board based only on the color of the Learn button.
Multiple LiftMaster logic boards may use yellow Learn buttons while being designed for different opener models, motors, features, or production generations.
Always verify:
• Garage door opener model number
• Existing logic-board number
• Learn button color
• Opener manufacture date
• Replacement-parts diagram or owner's manual
The 45DCT is designed for compatible DC-powered garage door openers. It should not be confused with LiftMaster 45ACT-series logic boards, which are intended for compatible AC-powered opener models.
Replacement / Cross-Reference Numbers
LiftMaster lists the 045DCT in association with several previous or alternate board identification numbers, including:
• 45DCBR1A
• 041D7356
• 1D7356
• 41DCBC1A
• 41DCBC3A
• 41DCCC2A
• 41DCBC5A
• 45DCCL5A
• 45DCCL3A
• 45DCCL1A
• 45DCCR5A
• 41D7356
• 45DCCR3A
• 45DCCR1A
• 001D7356
• 41DCCC1A
• 41DCCC3A
• 45DCJL5A
• 45DCRL1A
• 41DCCC5A
• 45DCRL3A
• 45DCJL1A
• 45DCJL3A
• 45DCBL5A
• 45DCBL3A
• 45DCBL1A
• 45DCBR5A
• 45DCRL
• 45DCBR3A
A number appearing in this cross-reference does not eliminate the need to confirm the garage door opener model before ordering.
Package Contents
• 1 LiftMaster 045DCT / 45DCT receiver logic board
Additional components, mounting hardware, wiring, remotes, wall controls, sensors, batteries, and other opener parts are not included unless specifically shown or stated with the product.
Installation Requirements
Installation requires opening the garage door opener housing and working with the opener's internal electronic components.
Before installation:
• Verify the opener model and replacement-board compatibility
• Disconnect electrical power to the garage door opener
• Disconnect battery backup power if the opener is equipped with a battery
• Document existing wire and connector locations before removing the original board
• Avoid damaging wiring harnesses or electronic connectors
• Follow the LiftMaster service or replacement instructions applicable to the opener model
After the replacement board is installed, remote controls, wireless keypads, and other Security+ 2.0 accessories may require reprogramming.
The garage door opener should be completely tested after installation.
Installation & Safety
Disconnect the garage door opener from AC power before removing the housing or accessing the logic board.
If the opener includes battery backup, disconnect the battery before servicing internal components.
Garage door openers contain electrical components and moving mechanical assemblies. Installation should only be performed by someone familiar with garage door opener repair and electrical safety procedures.
Never perform service while the opener can unexpectedly activate.
After installation:
• Restore power only after all wiring and connectors are securely installed
• Reprogram compatible remotes and accessories when required
• Test the wall control
• Test remote controls and wireless keypads
• Verify correct door travel
• Test the photo-eye safety sensors
• Test the automatic reversing system
• Confirm the garage door opens and closes normally
Do not operate the garage door opener if the door is damaged, improperly balanced, binding, or if required safety systems are not functioning correctly.
LiftMaster 45DCT / 045DCT Security+ 2.0 Receiver Logic Board for DC Garage Door Openers
Genuine LiftMaster 45DCT / 045DCT Security+ 2.0 receiver logic board for compatible LiftMaster and Chamberlain DC chain- and belt-drive garage door openers manufactured after 2011 with yellow Learn button systems.
Details
Need Help With Compatibility?
Not sure if this is the correct part for your garage door, operator, gate system, or application? Contact Us before ordering — we’re happy to help.
Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
Our goal is to help you identify the correct product before you order and reduce the possibility of ordering an incompatible part.
Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
Shipping & Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.
We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
Shop The Full Collection
