LiftMaster 045DCT Logic Board for Sears Craftsman 139.30437
The LiftMaster 045DCT is a Security+ 2.0 receiver logic board used on select DC chain and DC belt drive garage door openers. This listing is focused on Sears Craftsman 139.30437 applications that cross-reference to the LiftMaster / Chamberlain 45DCT board family.
What This Part Does
The 045DCT board controls the opener electronics and receives Security+ 2.0 radio commands from compatible yellow learn button accessories. It is a generation-specific board for DC chain and belt drive systems and should not be chosen by board shape alone.
Compatible With / Common Applications
Known and commonly referenced compatibility for the 045DCT / 45DCT board family includes the following. Confirm the opener model, original board number, yellow learn button, and parts diagram before ordering.
- Sears Craftsman 139.30437 applications when the original board crosses to the 45DCT / 045DCT family.
- Sears Craftsman 139.30430 and 139.3043 applications when the original board and parts diagram match the 45DCT family.
- LiftMaster 8360 Premium Series DC chain drive applications when the parts diagram calls for 045DCT.
- LiftMaster 8550 Elite Series DC belt drive applications when the parts diagram calls for 045DCT.
- Chamberlain HD920EV and HD930EV DC battery backup belt drive model families when the board callout matches.
- Chamberlain LW5000EV, WD962KEV, WD962KPEV, WD962MLEV, 349544, 349544EV, WD962KEVC and WD962MLEVL style references when confirmed by parts diagram.
- Select LiftMaster, Chamberlain and Sears Craftsman DC chain or DC belt drive openers manufactured after 2011 using Security+ 2.0 yellow learn button controls.
Compatible Accessories and Related Items
These related items are commonly used with this product family when the opener generation and learn-button color match.
- Security+ 2.0 yellow learn button remote controls such as 891LM and 893LM when compatible with the opener.
- Security+ 2.0 / MAX style keyless entry accessories such as 877MAX when compatible with the opener.
- Wall controls and myQ / AssureLink features only when supported by the specific opener model and board version.
- Use 050DCTWF style boards instead of 045DCT when the opener specifically requires the Wi-Fi receiver logic board service kit.
Features and Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Receiver logic board |
| Part Number | 045DCT / 45DCT |
| Sears Model Focus | 139.30437 |
| Application | Select DC chain and DC belt drive garage door openers |
| Security Technology | Security+ 2.0 |
| Learn Button Color | Yellow on matching units |
| Manufacturing Range | After 2011 opener generations |
| Compatible Operator Type | DC chain drive and DC belt drive |
| Notes | Not for purple 315 MHz Security+ boards, red/orange 390 MHz boards, or Wi-Fi boards that require 050DCTWF |
Also Known As / Related Part Numbers
- 045DCT
- 45DCT
- 45DCBR1A
- 45DCBR3A
- 45DCBR5A
- 041D7356
- 41D7356
- 001D7356
- 1D7356
- 41DCBC1A
- 41DCBC3A
- 41DCBC5A
- 41DCCC1A
- 41DCCC2A
- 41DCCC3A
- 41DCCC5A
- 45DCCL1A
- 45DCCL3A
- 45DCCL5A
- 45DCCR1A
- 45DCCR3A
- 45DCCR5A
- 45DCJL1A
- 45DCJL3A
- 45DCJL5A
- 45DCRL1A
- 45DCRL3A
- 45DCRL
- 45DCBL1A
- 45DCBL3A
- 45DCBL5A
- 45DCBR3A
- 47DCCR1
- 1D8363
- 45DCBL1
- 45DCBL2
- 45DCBL3
- 45DCBL4
- 45DCBL5
- 45DCCL1
- 45DCCL2
- 45DCCL3
- 45DCCL4
- 45DCCL5
- 45DCBR1
- 45DCBR2
- 45DCBR3
- 45DCBR4
- 45DCBR5
- 45DCCR1
- 45DCCR2
- 45DCCR3
- 45DCCR4
- 45DCCR5
- Sears Craftsman 139.3043 receiver logic board family
- Sears Craftsman 139.30430
- Sears Craftsman 139.30437
Technician Notes
- The 45DCT family has many suffix variations. Use the original board number and parts diagram to confirm the correct service board.
- Sears model 139.30437 should be treated as a model-specific path into the 45DCT family, not as proof that every yellow button board will fit.
- Do not use this board for older purple learn button 315 MHz openers or newer Wi-Fi board applications that call for a different service kit.
Before Ordering
- Confirm the opener model is Sears Craftsman 139.30437 or another compatible 45DCT family model.
- Confirm the opener is a DC chain or DC belt drive model manufactured after 2011.
- Confirm the unit has a yellow learn button and Security+ 2.0 accessories.
- Match the existing board number or suffix to the 45DCT related-number family.
- Plan to reprogram remotes, keypads, vehicle buttons, and connected features after replacement.
Professional Advisory
This board is installed inside the opener powerhead where line voltage may be present. Disconnect power before service, and use a qualified technician if the board has surge damage, water damage, burnt traces, repeated failures, or unsafe door movement.
Product Questions and Answers
Is 45DCT compatible with Sears Craftsman 139.30437?
Yes, Sears Craftsman 139.30437 is commonly listed as a compatible 45DCT / 045DCT board application when the original board family matches.
What learn button color should match this board?
This board is for Security+ 2.0 yellow learn button systems on compatible DC chain or DC belt drive openers.
Does 45DCT replace purple learn button boards?
No. Purple learn button 315 MHz boards are a different Security+ generation and should not be replaced with 45DCT.
Which LiftMaster models are commonly associated with 45DCT?
Common references include LiftMaster 8360 and 8550 when the opener parts diagram calls for the 045DCT board family.
Is 45DCT the same as a Wi-Fi logic board?
Not always. Some Wi-Fi openers use 050DCTWF or another Wi-Fi-specific board, so the original board number must be matched.
