eRA Arduino-S900

This ‘shield’ allows Arduino boards to communicate wirelessly using proprietary LPRS easyRadio technology operating in the 915MHz (US) Industrial Scientific band.  
 
The essence of these devices is ‘easy’. Host Arduino boards can send and receive (half duplex) up to 180 Bytes of data per packet that will be seamlessly delivered and presented to other hosts within range. There is no need for any complicated ‘bit balancing’ or  elaborate coding schemes. ‘Easy’: Data In and Data Out!
 
These devices provide considerably greater range (typically 200m) and less power consumption than similar WiFi or Bluetooth dongles operating in the overcrowded 2.4GHz bands.