The RC1682-SIG from Radiocrafts is a RF Module with Frequency 868.13 MHz(TX), 869.525 MHz(RX), Data Rate 100 bps (Uplink TX), 600 bps (Downlink RX), Supply Voltage 2.8 to 3.6 V, Current Receiving 31 mA, Current Transmitting 59 mA. More details for RC1682-SIG can be seen below.