How Can I Tell if a Slave is Communicating with a Master?

You can tell when a slave is connected with a master by looking at its main screen display.

An antenna icon flashes in the top-right corner when the slave and master are communicating. The number shown to the right of the antenna icon shows the signal strength (0-7 where 7 is the maximum signal strength).

 

Note: The LED flashes green in time with the master when a connection is established and maintained.