This 'shield' allows Arduino boards to communicate wirelessly operating in the 868MHz (UK & Europe) & 915MHz (US) Industrial Scientific & Medical (ISM) bands. 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.
Transmit, Receive & Busy LEDs
Integral SMA Antenna connector
Bi-directional link, no RF protocol software required