The ABBTM-2.4GHz-51-T from Abracon LLC is a RF Module with Frequency 2.4 & 2.48 GHz, Supply Voltage -0.30 to 3.6 V, Output Power 4 dBm, Sensitivity -93 to -70 dBm, Operating Temperature -40 to 85 Degree C. More details for ABBTM-2.4GHz-51-T can be seen below.