Features: 1.This product is embedded within the Bluetooth communication protocol, no need to install the driver, can be used on for Windows systems, also for DOS, Linux and other non-graphical operating systems. 2. Users do not need to know the professional knowledge of Bluetooth communication technology. For users, it is still ordinary serial communication without any difference between traditional serial cable connection. Communication program developers only need to write serial communication code. 3. Adopt CSR Bluetooth chip that supports Bluetooth 2.1 standard. Enhanced BER error rate performance and automatic frequency hopping technology ensure efficient and safe communication, and have stronger anti-interference ability to ensure communication stability and reliability. 4. Users can set up 12 different baud rates from 1200bps to 1382400bps by AT command (default 9600, n, 8, 1), and can also set a more personalized Bluetooth name for the device. 5. Support Bluetooth Serial Port Profiles (SPP), can connect and communicate with Bluetooth-enabled laptops, desktop computers with Bluetooth adapters, handheld Bluetooth PDA, Bluetooth GPS and other devices that support Bluetooth SPP services. 6. Transmission power conforms to the Bluetooth Class2 standard, and built-in high-sensitivity PCB printed antenna has a stable communication distance of up to 15 meters and can transmit wireless data through the wall. 7. RS232 serial Bluetooth adapter needs to supply power to the adapter through the MiniUSB interface on the adapter. 8. Equipped with RESET button, you can delete the paired device information saved in the adapter and re-pair with the new Bluetooth device. Specification: Executive Standard: Bluetooth SIG v2.1+EDR Bluetooth Protocol: Bluetooth serial port profile (SPP) Interface: RS232 Communication Rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 1382400bps Modulation Mode: 2.4G ISM direct sequence frequency hopping (FHSS) Communication Distance: Open space 15 meters, Class 2 Transmit Power: 4 dBm Accept Sensitivity: -79dBm Working Voltage: 5V Operating Current / Sleep Current: 40mA / 1.6mA (typical) Working / Storage Temperature: -10~50℃ / -20~80℃ Size: Approx. 5.5x3.5cm / 2.2x1.4in Package List: 1 x WRS232 Bluetooth Serial Adapter Communication Master-Slave Module 1、1.This product is embedded within the Bluetooth communication protocol, no need to install the driver, can be used on for Windows systems, also for DOS, Linux and other non-graphical operating systems. 2、2. Users do not need to know the professional knowledge of Bluetooth communication technology. For users, it is still ordinary serial communication without any difference between traditional serial cable connection. Communication program developers only 3、3. Adopt CSR Bluetooth chip that supports Bluetooth 2.1 standard. Enhanced BER error rate performance and automatic frequency hopping technology ensure efficient and safe communication, and have stronger anti-interference ability to ensure communication 4、4. Users can set up 12 different baud rates from 1200bps to 1382400bps by AT command (default 9600, n, 8, 1), and can also set a more personalized Bluetooth name for the device. 5、5. Support Bluetooth Serial Port Profiles (SPP), can connect and communicate with Bluetooth-enabled laptops, desktop computers with Bluetooth adapters, handheld Bluetooth PDA, Bluetooth GPS and other devices that support Bluetooth SPP services.