This DoorKing PCB Pass Switch, model number 1875-010, is a high-quality access control equipment unit made in the United States by Doorking. It is a versatile unit that can be used in a variety of settings, from commercial to industrial, and can be used to control access to different areas of a facility. With its sturdy build and reliable performance, this unit is sure to meet your access control needs. Whether you are looking to increase security at your facility or simply need a dependable way to control access to different areas, the DoorKing PCB Pass Switch is an excellent choice.