This is a genuine OEM Otis RS14 remote serial board. These are also known as "RSL" boards. RS14 boards are commonly used inside Otis COP's and Otis hall fixtures/stations. Remote serial boards interface the controller with external buttons, keyswitches and jewels. Terminals on the RS14 board serve as I/O. These terminals can both receive a discrete input to send along the RSL link and also provide discrete outputs. This version is most easily distinguished from others by the four white connectors along one edge. Other versions may have blue or black connectors. Previous versions include: DAA26800AL1 DCA26800AL1 Parts may only be used and installed by certified licensed technicians