Item Type: Serial Port Module <br>Material: Plastic <br>Operating Standard: BT SIG v2.1+EDR <br>BT Protocol: BT SPP <br>Interface Interface: RS232 <br>Communication Rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 1382400bps <br>Modulation Method: 2.4G ISM Direct Sequence Frequency Hopping (FHSS) <br>Communication Distance: 15 Meters in Open Space, Class 2 Level <br>Transmit Power: 4 dBm <br>Receiving Sensitivity: -79dBm <br>Working Voltage: 5V <br>Working Current/Sleep Current: 40mA/1.6mA (Typical Value) <br>Working Environment Temperature / Storage Environment Temperature: -10-50 Degrees Celsius / -20-80 Degrees Celsius <br>Size: Approx. 56.5 x 38.5 x 14.5mm / 2.2 x 1.5 x 0.6in<br>1、Built?in BT communication protocol, no need to install additional drivers, can be used in for Windows systems and non?graphical operating systems such as for DOS and for Linux. <br>2、Adopts CSR BT chip that supports BT 2.1 standard. Enhanced BER error rate performance and automatic frequency hopping technology can ensure efficient, safe, stable, and interference?free communication. <br>3、Can connect and communicate with BT?enabled laptops, desktop computers equipped with BT adapters, handheld BT PDAs, BT <br>4、Transmitting power complies with BT Class2 standard, built?in high?sensitivity printed circuit board antenna, stable communication distance up to 15 meters, and wireless data transmission through wall. <br>5、Need to supply power to the adapter through the Mini USB interface on the adapter, equipped with a RESET button, can delete the stored paired device information, and re?pair with the new device.1 x Serial Port Module&nbsp;