code: def enter_linking_mode(self, group=0x01):
          
          msg = ExtendedSend(self._address,
                             COMMAND_ENTER_LINKING_MODE_0X09_NONE,
                             cmd2=group,
                             userdata=Userdata())
          msg.set_checksum()
          self._send_msg(msg)
docs: Tell a device to enter All-Linking Mode.
  
          Same as holding down the Set button for 10 sec.
          Default group is 0x01.
  
          Not supported by i1 devices.