E72-2G4M05S1F is a self-developed, multi-protocol, 2.4G, SMD, wireless SoC module based on CC2652RB from TI. The transmit power is 5dBm.Built-in ARM microcontroller and high-performance wireless transceiver. With an integrated BAW(Bulk Acoustic Wave) resonator to generate a radio frequency carrier, so no external 48MHz crystal is required.