1) Install the batteries (2 x AAA batteries) or connect to car power source
2) Plug the FM transmitter into the audio device output port
3) Adjust the volume and frequency of the FM radio (avoid the transmission points
of the broadcasting stations)
4) Press the power button of the FM transmitter, tune the transmission frequency
according to the reception frequency of the FM radio (If the FM signal is
interrupted, please set the frequency of the FM Transmitter and the FM tuner
to the other frequency)
5) Press "O" button for a few seconds until M0, M1, M2...M9 is shown on the LCD, so
that you can save the transmission frequency (If no battery on battery box "no
power" can keep the stock and stock 10 years)
6) The FM transmitter will automatically shut down after 2 minutes if no audio
frequency is input