FM transmitter Baseus SUP0003754 — FM 87.5–108 MHz, Bluetooth, LED, 12/24V cigar lighter, 3.4A output

Baseus SUP0003754 is a digital FM transmitter that operates across the FM band from 87.5 to 108 MHz and is designed for use in vehicles with a 12 V or 24 V cigar lighter socket. The device receives audio from smartphones or other Bluetooth-capable sources and rebroadcasts it to a car radio via selectable FM frequencies. An integrated LED display provides clear indication of the selected frequency and connection status, while a built-in USB port supplies up to 3.4 A for charging mobile devices during travel.

Advantages

The transmitter combines wireless audio streaming over Bluetooth with a stable digital FM tuner, enabling playback through car audio systems without direct wiring. The LED display simplifies frequency selection and monitoring. Integrated charging capability with a 3.4 A USB output allows simultaneous device power delivery while streaming, and the unit is compatible with both 12 V and 24 V vehicle power systems, making it suitable for passenger cars and larger vehicles.

Suitable for

• Streaming music or podcasts from a smartphone to a car radio
• Hands-free calls through the car audio system (when supported by connected devices)
• Charging phones, tablets or other USB-powered devices while driving
• Use in both cars and trucks with 12 V or 24 V cigar lighter sockets

Key specifications

• FM frequency range: 87.5–108 MHz (digital tuner)
• Bluetooth audio interface for wireless connection
• Auxiliary input (AUX) for direct wired audio sources
• LED display for frequency and status indication
• Power input: vehicle cigar lighter socket (compatible with 12 V and 24 V)
• USB charging output: up to 3.4 A
• Color: black

How to use

Insert the transmitter into the vehicle cigar lighter socket. On the car radio, select an unused FM frequency in the 87.5–108 MHz range and set the same frequency on the transmitter using the LED display controls. Pair your smartphone or other Bluetooth-capable audio source with the transmitter following standard Bluetooth pairing steps. For wired playback, connect the audio source to the AUX input. Use the USB port to charge devices; the transmitter will provide up to 3.4 A output while transmitting audio.

Usage recommendations

Choose an FM frequency with minimal local interference for stable audio. Keep the transmitter’s firmware and connected devices’ Bluetooth drivers up to date for best compatibility. Avoid inserting or removing the unit while the vehicle is moving to prevent accidental damage; ensure connectors are clean and dry. When using in larger vehicles with 24 V systems, confirm compatibility before prolonged use.