You can use this BlueTooth module simply for serial port replacement to establish connection between PC and your embedded project or between Microcontroller and Robot ,etc.
The module can be configured for baud rates 1200 to 115200 bps.
Bluetooth Module HC-05 Features
Support Master & Slave Mode
Serial communications: 9600-115200bps
SPP (Serial Port Profile) support
Support UART,USB,PCM interface to host system
Easy Configuration through AT Commands
Frequency: 2.4~2.524 GHz
Bluetooth core V2.0 compliant
Built-in Chip antenna
Power Supply: 3.7-5V
Data Tx/Rx with Bluetooth Arduino
Arduino code sample