The RF-BM-ND05I from RF-star is a RF Module with Frequency 2402 to 2480 MHz, Data Rate 125 Kbps to 2 Mbps, Supply Voltage 1.7 to 3.6 V, Current Receiving 4.6 mA (Peak RX), Current Transmitting 4.8 mA (Peak). More details for RF-BM-ND05I can be seen below.