The 045ACTMC is a replacement Security+ 2.0 receiver logic board used on select LiftMaster and Chamberlain AC chain and belt drive garage door openers. It is commonly associated with openers manufactured after 2011 that use a yellow learn button.
Compatibility and Application
Commonly used with select LiftMaster and Chamberlain AC chain drive and belt drive openers manufactured after 2011 with Security+ 2.0 radio technology and a yellow learn button. It is not for older 315 MHz purple learn button systems, 390 MHz red/orange learn button systems, or unrelated DC logic board families.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Receiver logic board |
| Part Number | 045ACTMC |
| Application | Security+ 2.0 AC garage door opener control board replacement |
| Compatible Operator Type | Select AC chain drive and belt drive garage door openers |
| Security Technology | Security+ 2.0 |
| Learn Button Color | Yellow |
| Production Range | Select openers manufactured after 2011 |
| Notes | Remotes and keypads may need to be reprogrammed after board replacement |
Also Known As / Related Part Numbers
- 45ACT
- 045ACT
- 1D7675
- 041D7675
- 041D7656
- 001D7675
- 41D7656
Technician Note
A failed logic board can look like a bad remote, wall station, or safety sensor issue. Confirm incoming power, sensor status, wall control wiring, and accessory programming before condemning the board.
Before Ordering
- Match the opener to the 045ACTMC or compatible 045ACT family board.
- Confirm the opener uses a yellow learn button.
- Confirm the opener is an AC chain or belt drive model manufactured after 2011.
- Plan to reprogram remotes and wireless keypads after replacement.
- Disconnect power before service and avoid working on live electrical components.
Professional Advisory
Logic board replacement involves electrical components. If there is burning, water damage, power surge damage, repeated board failure, or unsafe door movement, use a qualified garage door technician.
Product Questions & Answers
Is 045ACTMC the same as 045ACT?
045ACTMC is commonly used as a current replacement in the 045ACT Security+ 2.0 receiver logic board family.
What learn button color should this board match?
This board is for compatible Security+ 2.0 openers with a yellow learn button.
Will this board work with older purple learn button openers?
No. Purple learn button openers use different 315 MHz logic board families.
Do remotes need to be programmed after changing the board?
Yes. Remotes, keypads, and related wireless accessories usually need to be programmed to the replacement board.
Does this board include safety sensors or wall controls?
No. This listing is for the receiver logic board assembly only unless the product listing states otherwise.
