HC-05 Bluetooth RF transceiver module
Bluetooth protocol: Bluetooth Specification v2.0+EDR
Frequency: 2.4GHz ISM band
Modulation: GFSK(Gaussian Frequency Shift Keying)
Emission power: ?4dBm, Class 2
Sensitivity: ?-84dBm at 0.1% BER
Speed: Asynchronous: 2.1 Mbps (Max) / 160 kbps, Synchronous: 1 Mbps/ 1 Mbps
Security: Authentication and encryption
Signal coverage: 30ft
Profiles: Bluetooth serial port
Power supply: +3.3VDC 50mA
Can work as Master or Slave Module