The MS52SF1-TLSR8208 from Minewsemi is a RF Module with Frequency 2.4 GHz, Supply Voltage 1.8 to 3.6 V, Current Receiving 9.1 mA, Current Transmitting 9.5 mA (Emission), Output Power -45 to 10 dBm. More details for MS52SF1-TLSR8208 can be seen below.