FM transmitter for your car

FM modulators are used to play digital audio tracks over the radio. They allow you to modernise cheap or out-of-date car stereos that don’t have AUX inputs or Bluetooth capability.

FM modulators: 8 key facts

1. This device can read the files stored on flash memory media: USB flash drives, SD and MMC memory cards, or from various portable devices.
2. The key elements of the device are a converter that changes the digital recording into electromagnetic waves and a transmitter that transmits the modulated waves. The vehicle radio picks them up, amplifies them and demodulates the audio signal. Then it is transferred to the loudspeakers and reproduced as sound.
3. Most devices are fitted with a plug to be connected to the cigarette lighter socket.
4. Different products can have different functions. They generally have control buttons and a screen. Some models support Bluetooth connection and can be paired with mobile devices and used for hands-free calls.
5. You must not connect a 12 V device to the 24 V electrical system as this could cause the product to fail.
6. For better sound, you should set the radio to the same frequency as the FM transmitter. Many devices are fitted with noise suppression technology which improves the sound quality.
7. For convenience and to minimise the risk of accidents, some accessories are supplied with a remote control. It can be fitted into the steering wheel, allowing the driver to control playlists, turn the volume up or down, or answer phone calls without taking their eyes off the road.
8. To protect the fuse from blowing out, you should unplug the transmitter from the lighter socket before starting the engine. It is also necessary to disconnect it from the power supply before ejecting or inserting a flash drive.

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