The XBee ZB SMT Programmable from Digi is a RF Module with Frequency 2.4 GHz, Data Rate Up to 1 Mbps, Supply Voltage 2.1 to 3.6V, Current Receiving 42 to 45 mA, Current Transmitting 47 to 59 mA. More details for XBee ZB SMT Programmable can be seen below.