HC-06 Bluetooth Module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. Its communication is via serial communication which makes an easy way to interface with controller or PC. HC-06 Bluetooth module provides slave mode only.
 
Specification:

• Model : HC-06
• Input Voltage : DC 5V
• Communication Method : Serial Communication
• Slave mode
• Transmission distance: 20 ~ 30m in free space