Preferred module: XBee RF Module (IEEE 802.15.4 standard)<br>
Brand: MaxStream/Digi international<br>
Frequency: 2.405 - 2.48 GHz<br>
Number of channels: 16 channels (each 5 MHz BW) <br>
Preferred channel: 2.41 GHz<br>Backup channels: Remaining 15 channels<br><br>No backup modules.<br>