Liftmaster 50DCTWFLK Receiver Logic Board, DC, WiFi, Lock Capable
The LiftMaster 050DCTBFLKMC receiver logic board is a Bluetooth-enabled, lock-capable DC control board used in select LiftMaster and Chamberlain residential garage door openers. It is part of the newer enhanced myQ / Security+ 2.0 board family and is commonly used where the opener has DC motor control, Wi-Fi connectivity, a yellow learn button, and support for the garage door lock feature. The board handles the opener logic, radio receiver, wall control communication, photo eye input, travel/force programming, myQ communication, and lock output functions.
This is a high-fitment-risk part because several LiftMaster logic boards share similar housings and labels. A board for an AC opener, non-lock DC opener, RJO wall-mount opener, or older Bluetooth/non-Bluetooth generation may not work even if the connector layout looks close. Use the original board number and opener parts diagram as the final authority before ordering.
Compatible With
- Select LiftMaster and Chamberlain lock-capable DC belt drive garage door openers with enhanced myQ technology, yellow learn button, and compatible model generation
- Select LiftMaster and Chamberlain lock-capable DC chain drive garage door openers with enhanced myQ technology, yellow learn button, and compatible model generation
- Common model-family references may include newer Secure View, LED, battery backup, and lock-capable DC opener platforms when the original parts diagram calls for 050DCTBFLKMC / 050DCTBLKMC / 050DCTWFLK
- Related model references seen in this board family include select 87504, 87802, 84602, 84501, 84504R, 84505R, 85870, 81600, 81602, 81640, 81650, and 81550 style platforms only when the specific opener parts diagram calls for the lock-capable board
- Not for AC motor boards such as 050ACTBMC or 050ACTWFLKMC, non-lock DC boards such as 050DCTBFMC, RJO wall-mount boards such as 050DCRJWFMC, or older purple/red/green learn button units
Also Known As / Related Part Numbers
- 050DCTBFLKMC
- 050DCTBFLK
- 050DCTWFLK
- 50DCTWFLK
- 050DCTBLKMC
- 050DCTBLK
- 041-0036
- 50DCBL(1-5)LK
- 50DCCL(1-5)LK
- 050DCTBLK lock capable board
- DC Wi-Fi lock capable receiver logic board
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Receiver logic board |
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| Part Number | 050DCTBFLKMC / 050DCTBFLK |
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| Application | DC Wi-Fi lock-capable garage door opener control board replacement |
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| Compatible Operator Type | Select DC belt drive and DC chain drive openers |
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| Security Technology | Security+ 2.0 yellow learn button |
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| Connectivity | Wi-Fi / myQ / Bluetooth-enabled setup support |
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| Lock Capability | Yes, for compatible lock-capable opener configurations |
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| Notes | Requires model and parts-diagram confirmation |
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Technician Note
If the opener does not have the lock feature or the original board label does not match the lock-capable 050DCT board family, do not assume this board is correct. Similar boards can have different firmware, terminals, or supported accessories.
Before Ordering Checklist
- Confirm the original board part number or replacement chart reference.
- Confirm the opener is a DC chain drive or DC belt drive model, not AC or RJO.
- Confirm the opener is lock capable and uses the correct yellow learn button Security+ 2.0 generation.
- Compare connector layout, lock terminals, and board label before installation.
- Plan to reprogram remotes, keypads, travel limits, force settings, and myQ after replacement.
Professional Advisory
Logic board replacement should be done with power disconnected. If there is evidence of a surge, burned trace, shorted accessory wiring, or repeated board failure, have the opener checked before installing the new board.
Important Ordering Warnings
Product Questions & Answers
What opener type uses the 050DCTBFLKMC board?
This board is for select lock-capable DC chain drive and DC belt drive LiftMaster and Chamberlain garage door openers with enhanced myQ technology and a yellow learn button.
Is 050DCTWFLK related to 050DCTBFLKMC?
Yes. 050DCTWFLK, 050DCTBLKMC, and 050DCTBLK are commonly listed as related or earlier references for this lock-capable DC board family.
Can this replace a non-lock DC board?
Only when the opener model and parts diagram call for the lock-capable board family. Non-lock DC boards may look similar but can have different features and part numbers.
Does this board support the garage door lock feature?
Yes, this board family is lock capable. The opener must be built for that feature and use the correct wall control, lock terminals, and compatible operator configuration.
What has to be reset after replacement?
Remote controls, keypads, Wi-Fi/myQ setup, travel limits, force settings, and lock-related settings may need to be reprogrammed after the board is installed.
