Global Cache GC-RG1 General IR Receiver Power Type_Power Over Ethernet The Rack Mount kit is

The Rack Mount kit is included in the box

The GC-100-18R has 2 Serial/RS232 ports and 6 IR ports and 3 Contact Closure/Relay ports

Duplex is unique to RS485 serial cables

the Contact Closure Sensor will work with other controllers that provide 5V power and accept digital logic (TTL) input

Global Cache GC-RG1 General IR Receiver Power Type_Power Over Ethernet The Rack Mount kit isCapture IR frequencies from 30KHz to 72KHz for use of IR commands on your home automation network. The General IR Receiver plugs directly into the GC IRE IR Extender to capture and digitize IR signals. Global Cache's General IR Receiver can also operate within a Xantech or Xantech compatible environment.