Turn on buzzer and set LED to red only. The timeout here must exceed
         the total buzzer/flash duration defined in bytes 5-8.

def set_buzzer_and_led_to_active(self, duration_in_ms=300):
        """Turn on buzzer and set LED to red only. The timeout here must exceed
         the total buzzer/flash duration defined in bytes 5-8. """
        duration_in_tenths_of_second = min(duration_in_ms / 100, 255)
        timeout_in_seconds = (duration_in_tenths_of_second + 1) / 10.0
        data = "FF00400D04{:02X}000101".format(duration_in_tenths_of_second)
        self.ccid_xfr_block(bytearray.fromhex(data),
                            timeout=timeout_in_seconds)