Emartee Serial Port Bluetooth Shield employs Bluecore*-External chip from CSR, supports Bluetooth V2.0, industrial standard and super light dimension. It has onboard chip antenna to communicate directly with various bluetooth dongles and mobilephone. With new AT command support, you can even change the baud rate on the fly!

This wireless serial interface module have compact structure, with high efficient on-board antenna, and it can be matched with kinds of bluetooth adapter.
There are 3.3V and 5V logic level interface, power indicator light, state indicator light and it always flash when being in pairs.
Shown as below:
Basic Specification:
_ CSR chip, Bluetooth V2.0
_ Wave band: 2.4GHz&#x*7; 2.8GHz, ISM Band
_ Protocol: Bluetooth V2.0
_ Power Class: (*6dBm)
_ Reception sensitivity: **4dBm
_ Transmitting power: &#x***4; 4dBm, Class 2
_ Power supply Voltage: *3.3V / *5V
_ Input Voltage: *3.5V~*8V
_ Support profile: Bluetooth serial port
_ Transmission Rate: Asynchronous: 2.1Mbps(Max) / **0 kbps; Synchronous: 1Mbps/1Mbps
_ Security feature: Authentication and encryption
_ Current: Paring - *5mA, Connected - 8mA
_ Modulation system: GFSK(Gaussian Frequency Shift Keying)
_ User defined Baud rate: ***0, ***0, ****0, ****0, ****0, *****0, *****0, *****0, *****0, and ******0.

_ Dimension: *7.2 mm**0.3mm*4mm,
_ Embedded system, easy wire replacement, Industrial wireless solution.
_ Connectable with notebook, Bluetooth dongle, PDA and etc.
This shield can be used with Tiny USB Bluetooth adapter - 2.0 simply.
By the most important way, this Shield have extracted the PCM, SPI, USB interface etc, Humanized design provides the convenience for secondary development.
Note:
1, Do not connect the wrong power module
2, Please confirm baud rate of the target system when using, because different
Baud rate can not be matched.
3, PC must bring bluetooth driver, support bluetooth V2.0 standard protocol
4, When communication, please don't be beyond the max distance, it will be better if there is no any obstacles.