1、Add Bluetooth Function: This for HC05 Bluetooth RF transceiver can quickly add Bluetooth function to your circuit board project. 2、Mobile Control: You can use your for android phone to control some gadgets in your circuit board project, such as: switch, LED. 3、Basic Parameters: The default baud rate of for HC05 wireless Bluetooth RF transceiver: 38400(CMD mode), 9600(data mode); data bit: 8; stop bit: 4、Long Distance Communication: Bluetooth module's communication distance: 10m, communication protocol:UART, Bluetooth0, signal stability. 5、PCB Board: for HC05 Wireless Bluetooth receiver uses PCB board, stable and durable, power supply: 5V DC; indicator: PWR State. 1 x for HC05 Bluetooth Module Item Type: for HC05 Bluetooth ModuleMaterial: PCBCompatible: for IteaduinoCommunication Distance: Approx. 10m/ 32.8ftUART Interface (TTL) and Programmable Transmission Rate (SPP Firmware Installation)Default Baud Rate: 38400(CMD Mode)/9600(data Mode)Data Bits: 8Stop Bit: 1Default PINCODE: 1234, A Complete Set of Configuration CommandsMicroprocessor: CSR BC417Indicator: PWR StatePower Supply: 5V DCInput and Output: 6Communication Protocol: UART, Bluetooth 2.0