... or processor, it adopts plug and play to realize the wireless data transmission between devices. It has two devices used together ... * Standard UART interface* Support multi baud rate(such asl.2k, 2.4, 4.8, 9.6k, 19.2k, 38.4k, 57.6k, 115 ... .6K)* Energy saving automatically mode.* Support low power working mode/high speed working mode* Safe authentication, data encryption. quality bluetooth 4.0 module