whats the difference between a Module HC-05 Master and HC-06 Slave? I have a slave module (HC-06) but im not sure whats the purpose of the word "Master" in the HC-05


1 Answer 1


A slave connects to a master. A master can be a PC with a Bluetooth radio in it / plugged into USB, or it can be a "master" HC-05 module.

Note the HC-05 can work in either master or slave mode.

Examples of masters are PCs, mobile phones when using bluetooth headsets, etc.

Examples of slaves are bluetooth headsets, phones when connecting to a computer, etc.

  • \$\begingroup\$ So the master has the capability to find other devices and connect? so if I use the HC-05 there I have to use the pair code and that stuff? \$\endgroup\$
    – Pulse9
    Nov 9, 2014 at 22:19
  • \$\begingroup\$ That is correct. \$\endgroup\$
    – Majenko
    Nov 9, 2014 at 22:25

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.