Garage Door Openers · parts
LiftMaster 8155 remote and sensor compatibility: Security+ 2.0 parts
LiftMaster's exact 8155 page supplies a useful generation-specific lookup: yellow Learn button and Security+ 2.0 Tri-band, direct listed remote G891LMMC, sensor kit 041A5034, bracket kit 041A5266-3, and receiver boards 045ACT/045ACTMC. The 8155 owner and installation manuals are linked on the same page. This is the base 8155, not 8155W; the Wi-Fi model has different listed parts and must be checked separately.
Safety boundary
- Keep people, pets, and vehicles clear of the moving door; follow the exact opener manual for any owner-level operating or reversal checks.
- Never bypass, disconnect, tape over, or defeat safety sensors or automatic reversal. Stop using the opener if a safety device is absent, damaged, or not working.
- Limit owner checks to reading labels, replacing accessory batteries as directed in the accessory manual, and observing visible sensor obstruction/status. Do not open the powerhead or alter wiring.
- Springs, lift cables, drums, door balance, track/tension adjustments, and high-force hardware are technician work. Stop and call a qualified garage-door technician if the door binds, hangs crooked, feels heavy, or has a broken spring/cable.
Compatibility requires a direct model listing, explicit supersession, or equivalent manufacturer evidence.
Required identifiers
- Complete model label exactly 8155; do not substitute 8155W or a market suffix
- Remote label, especially G891LMMC, and its battery type
- Safety-sensor label/part number and bracket style
- Serial/manufacture details if the exact 8155 parts lookup asks for them
Compatibility rules
- The OEM LiftMaster Canada model page identifies exact base model 8155, says the model is discontinued, and lists yellow Learn-button compatibility and Security+ 2.0 Tri-band.
- The same 8155 parts page lists remote G891LMMC, safety sensor kit 041A5034, sensor bracket kit 041A5266-3, and receiver boards 045ACT and 045ACTMC.
- The 8155 page links the 8155 installation and owner's manuals. Use those exact manuals for pairing and safety checks.
- Do not transfer any listed part to 8155W; its separate parts diagram identifies a different Wi-Fi board and newer sensor kits.
Never assume
- 8155 equals 8155W
- A yellow Learn button alone proves every yellow-code remote will pair
- A listed old sensor kit can be bypassed if it is dirty, misaligned, or unavailable
- A remote failure proves the logic board failed
Exact 8155 parts receipt
The LiftMaster model page names base model 8155 and lists the matching G891LMMC one-button remote, 041A5034 sensor kit, 041A5266-3 sensor bracket kit, and 045ACT/045ACTMC board options. The page also identifies yellow Learn-button and Security+ 2.0 Tri-band compatibility.
The page is the Canadian LiftMaster listing; it names model 8155 without an added C suffix. This record applies to the exact base label 8155 shown there and does not assert fitment to 8155W or another version.
Troubleshoot a remote or keypad safely
- Read the opener label and remote label before ordering.
- Check the remote battery and programming section of the 8155 manual.
- A visible amber/green sensor state or an obvious blocked beam is useful evidence, but it does not identify a failed component.
- If the door does not reverse safely, stop and request service; do not bypass the sensors or make live-board tests.
Keep service parts with trained service
A replacement receiver board is an internal electrical component. This record identifies the OEM-listed part numbers but does not give a DIY powerhead or wiring procedure. Confirm current part/supersession with the full model label before any repair.