Broadcast messages are for connections that do not need assurance of the delivery of the message. Sensors such as temperature, humidity, HR, etc., use this method. The diagram on this slide illustrates two ways that broadcast can be used. Master to slave shows the master sending a packet transmission on its assigned frequency and at its configured message rate (the red block) and then opening a receive window to listen for other transmitters in the time slot. Should there be traffic detected in the receive window, on the next message the master will slightly adjust the transmission period to avoid the noise. The slave to master portion shows that the receiver can also broadcast back to the master. In the case of  a slave that has a message to go back to the master it would use the broadcast data transfer and the master’s receive channel would hear that message and react to it.