The RF-BM-ND04 from RF-star is a RF Module with Frequency 2402 to 2480 MHz, Data Rate 1 to 2 Mbps, Supply Voltage 1.7 to 3.6 V, Current Receiving 5.4 mA (Peak RX), Current Transmitting 5.3 mA ( Peak TX). More details for RF-BM-ND04 can be seen below.