The NABCO GCB-101-02 is a genuine control circuit board assembly designed for reliable performance in various industrial and commercial applications, often serving as a critical component in automatic door systems. This green printed circuit board (PCB) is engineered with high-quality components to ensure precise control and long-term durability. It comes fully populated with essential parts, including a Cosel ZUS25 2405 DC-DC converter for stable power regulation and an ma Isolation Amplifier M4550-B for accurate signal processing. As a direct replacement part, the GCB-101-02 is ideal for repairing or maintaining NABCO equipment, restoring functionality to its original specifications.