Digi International Xbee ZigBee Module, +5dBm, SPI, UART

XBee ZigBee RF modules provide wireless connectivity, a simple way to integrate mesh technology into applications. The Serial Peripheral Interface (SPI) provides a high-speed interface and optimises integration with embedded microcontrollers. XBee RF modules require no configuration or additional development.

Supports binding and multicasting, for easy integration into home automation applications
15 Input/Output digital lines
Receiver sensitivity of 110 dB
Sleep current of sub 1 μA
UART, SPI or over the air firmware upgrades