The Allen Bradley 1771-P4S 120V AC Power Supply Module is a reliable and high-quality component designed for use with PLC-5 controllers. Made by the reputable brand Allen-Bradley in the United States, this power supply module is specifically designed to provide a consistent and stable power source for your industrial automation system. With its sturdy construction and proven track record, the Allen Bradley 1771-P4S is a key component for ensuring smooth and efficient operation of your PLC system.