One of the unique capabilities of cnReach is the option to add analog or digital I/O directly in the radio module itself. For example, operators can interface with switches, pressure sensors, motor controllers, mechanical counters, light sensors, temperature gauges, etc. These sensors and actuators can then be read or controlled over long distances with high-reliablity.
Check out these schematics posted in the knowledge base for details on how you to can interface with the 'real world'.
Analog Schematic http://community.cambiumnetworks.com/t5/cnReach-FAQ/Schematic-of-Analog-I-O-Pins-on-cnReach/m-p/69627#U69627
Digital Schematic http://community.cambiumnetworks.com/t5/cnReach-FAQ/Schematic-of-Digital-I-O-Pins-on-cnReach/m-p/69625#U69625
Whether you've used cnReach to do these kinds of interfaces or not, what other ways would you use this capability at the end of a radio link.