While viewing the device list from the COBRA Control Panel, the software will highlight the current channel that your 18R2 has selected in a pastel yellow.
There are two benefits to this. The first is that while your 18R2 is on a specific channel the Control Panel software is continuously updating the data it receives from that module. This allows you to have current up to the second data on the signal strength, battery life, and continuity.
The second benefit is that if you use the 18R2 to start the script and are not constantly looking at the controller you will know if the controller is or is not on the trigger channel.