E72-2G4M05S1B Transmitter Receiver with PCB and IPX Antennas 2.4GHz CC2640 SMD BLE4.2 2.4G Wireless ble Module [IC]:CC2640 [Frequency]:2.402~2.480GHz [Power]:5 dBm [Distance]:0.5 km [Interface]:I/O [Weight]:2.2±0.1 g [Introduction]:E72-2G4M05S1B is a small size...