This is a Secura Key mini-mullion-style proximity card reader.
The RemotePro CR series is designed to operate in conjunction with Ascent family (select models), Edge family, and many other popular security management systems using a 26-bit Wiegand protocol. Simply connect the RemotePro CR of your choice to a new or existing master controller (via 6-conductor, 22-gauge wire) and you have immediate access control.