Bluetooth module HC-05 Master and slave Two in one module.
Please note: iOS devices (iPhone) are not supported
Use the CSR BC417 mainstream bluetooth chip, bluetooth V 2.0 SPP protocol standards
Module working voltage 3.6 V to 6V
Default rate of 9600,
default pin: 1234, the user can be set up. click the button into AT MODE
Can be switched via AT commands as master or slave mode, the device can be connected via AT commands specified