... :-25~85 * Standard UART interface quality bluetooth 4.0 moduleBluetooth Module can be applied to kinds of electronic information ... a pair of Bluetooth RS232 module, the process will be completed automatically.Features:* Bluetooth 4.0* On-board antenna ... interface* Support multi baud rate(such asl.2k, 2.4, 4.8, 9.6k, 19.2k, 38.4k, 57 ... * Safe authentication, data encryption. quality bluetooth 4.0 module