Data mode allows application data to be transmitted from a node to the hub. The hub continuously listens for data packets from nodes. When valid data is received from a node, the hub returns an AutoACK to the node and sends the data to the application. The hub monitors the interference level and moves to ping mode if the RSSI interference threshold RSSI_NOISE_THRESHOLD is reached. This ensures that the hub is operating on a quiet channel and is capable of receiving node packets.