This shield is also compatible with Arduino Due(3.3v) Board, including Arduino Uno and Mega(5.0v)

 The Bluetooth Shield integrates a Serial Bluetooth module. It can be easily used with Arduino for transparent wireless serial communication. You can choose two pins from Arduino D0 to D7 as Software Serial Ports to communicate with Bluetooth Shield (D0 and D1 is Hardware Serial Port). 

Features

Arduino compatible

Up to10m communication distance in house without obstacle

UART interface (TTL) with programmable baud rate (SPP firmware installed)

Default baud rate: 38400(CMD MODE) / 9600(DATA MODE), data bits: 8, stop bit: 1, Parity: No parity

Default PINCODE:”1234”A full set of configuration commands

On board PCB antenna