FM Bluetooth Transmitter LTC LXTR251 — V5.3, 120W car socket, QC3.0 + USB-C PD20W, battery meter

The LTC LXTR251 FM Bluetooth transmitter converts a vehicle cigarette-lighter socket into a multifunctional audio and charging hub. Equipped with Bluetooth 5.3 for wireless audio streaming and hands-free calls, the device supports FM modulation to relay phone audio via the car stereo. It adds a 120W powered socket output, a QC3.0 fast-charging USB-A port, and a USB-C PD port with up to 20W output, while an integrated battery/voltage meter displays the vehicle battery status.

Advantages

The transmitter combines modern Bluetooth 5.3 connectivity with FM modulation to enable wireless playback on older car stereos. Multiple charging options allow simultaneous powering of devices: a high-power socket outlet, one QC3.0 USB-A fast-charging port and one USB-C PD 20W port. The built-in battery/voltage meter provides continuous monitoring of the vehicle electrical system, helping to detect low-voltage conditions. Compact plug-in form factor keeps the dashboard tidy and installs without tools.

Suitable for

• Vehicles without Bluetooth-enabled stereo systems that require hands-free calling and audio streaming
• Drivers needing multiple fast-charging ports for phones, tablets or navigation devices
• Users who want real-time vehicle battery/voltage monitoring from the cigarette-lighter socket
• Older cars where audio must be transmitted to the radio via FM frequency

Key specifications

• Wireless standard: Bluetooth 5.3 for audio streaming and calls
• FM modulation to transmit audio to vehicle radio
• Socket output capability: up to 120W
• USB-A port: QC3.0 fast charge
• USB-C port: Power Delivery up to 20W
• Integrated battery/voltage meter for vehicle electrical monitoring
• Plug-in form factor for cigarette-lighter socket installation

How to use

Insert the LXTR251 into the vehicle cigarette-lighter socket and power it on. Pair your smartphone with the transmitter via Bluetooth 5.3 following the phone’s Bluetooth settings. Select an unused FM frequency on the transmitter and tune the car radio to the same frequency to hear phone audio through the stereo. Connect devices to the QC3.0 USB-A or USB-C PD port to charge; use the powered socket outlet for additional accessories up to the specified power limit. Read the device display or indicators to monitor the vehicle battery voltage while the transmitter is connected.

Usage recommendations

For best audio quality, choose a clear FM frequency with minimal local interference and keep the transmitter’s firmware and phone Bluetooth settings updated. Avoid exceeding the socket output power limit and use certified charging cables for optimal charging performance and safety.