HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. The serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with a complete 2.4GHz radio transceiver and baseband. It uses the CSR Bluecore 04-External single-chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature).
Features:
Typical -80dBm sensitivity
Up to +4dBm RF transmit power
Low Power 1.8V Operation, 1.8 to 3.6V I/O
UART interface with programmable baud rate
With integrated antenna
Default Baud rate: 38400, Data bits:8, Stop bit:1, Parity: No parity, Data control: has.