1- Ethernet RJ-45 Port for connection to the local area network. 1- Relay (NO, NC, or Momentary). 1- Video or Voltage Sensor Port for Power Sensing Intelligent Macros. 6- Adjustable IR Ports (sixth port can be used for URC Lighting Control via the optional RFTX-1). 2- Two Way RS-232 Ports. 1 RF IN port for connection to optional. 1 RF OUT port for connection to additional. 1 IR port for connection to optional MRZ-260.