To ensure the safety of your commercial space, your garage door opening system must operate correctly. As the brain of your operating system, the circuit board is a crucial component, and a faulty circuit board can affect all or some of your system’s functionality. Also known as the 1A5251-4 circuit board, the LiftMaster K001A5251-4 circuit board is specifically made for LiftMaster LGO commercial operators. An LGO operator is specifically designed for sectional industrial doors. Needless to say, a faulty LGO operator is not safe and can halt business operations. Replacing your K001A5251-4 LGO LiftMaster circuit board can restore your system’s functionality, ensuring the safety and operation of your commercial space. To protect your LGO LiftMaster circuit board, we recommend a LiftMaster 990LM power surge protector.