The LiftMaster 041A3150 Terminal Block with Screws is an OEM replacement wiring block for select LiftMaster and Chamberlain residential garage door openers. Mounted on the opener’s logic/control board, this terminal block provides secure screw-terminal connections for low-voltage accessories such as the wall control, photoelectric safety sensors, and compatible external controls. Replacing a worn, cracked, or corroded terminal strip helps restore reliable signal and sensor performance, reducing intermittent operation caused by loose or damaged connections. This is a hardware-only part intended to replace the original terminal block; it does not include a logic board or wiring.
Installation typically involves disconnecting power to the opener, removing the cover, transferring wires from the old block to the new one per the unit’s wiring diagram, and fastening the new terminal block using the included screws. No programming is required after installation, but safety sensors and wall controls should be tested for proper operation. For compatibility, confirm 041A3150 in your opener’s owner’s manual or illustrated parts diagram to ensure a correct fit across applicable chain-drive or belt-drive models. Common search terms include LiftMaster 041A3150, terminal block with screws, garage door opener terminal strip, control board connector, and replacement part for wall control and safety sensor wiring.