HC-05 Bluetooth module

The HC-05 Bluetooth module is that the most economical and easiest method to travel wireless via Bluetooth. This module makes it simple for you to wirelessly extend your serial interface, therefore you'll manage any program running on your portable computer with port interface.

The four pins are:

VCC (Power three. 3 – 6V);
GND;
TXD;
RXD;
Default pairing code: 1234
Default baud rate: 9600

Usually this Bluetooth module is employed with the Arduino, however it will be used with others microcontrollers devices. 
So if you’re searching for an honest thanks to communicate to your Arduino trough Bluetooth this can be an honest approach. Here the web is jam-packed with tutorials exploitation this actual model...