LENCENT Bluetooth 5.3 FM Transmitter Instruction Manual

1. Introduction

Thank you for choosing the LENCENT Bluetooth 5.3 FM Transmitter. This device allows you to stream music and make hands-free calls through your car's FM radio, while also providing fast charging capabilities for your mobile devices. Designed with a durable zinc alloy shell and advanced components, it ensures a stable connection and high-quality audio experience.

2. Safety Information

• Do not disassemble or modify the device.
• Keep the device away from water, moisture, and extreme temperatures.
• Use only in vehicles with a 12-24V DC power outlet.
• Avoid prolonged exposure to direct sunlight.
• Ensure proper ventilation around the device during use.

3. Product Overview

The LENCENT BC76 FM Transmitter combines multiple essential car accessories into one compact, high-performance unit.

• All-Metal & Upgraded Components: Constructed from a one-piece zinc alloy for superior heat dissipation and durability, ensuring a stable and long-lasting performance.
• Bluetooth 5.3: Features an upgraded Bluetooth 5.3 chip for faster pairing, more stable connections, and crystal-clear hands-free calls. The optimized antenna module significantly improves call quality.
• Hi-Fi Music Streaming: Enjoy lossless music streaming with a precise and stable connection, free from stuttering.
• Colorful Breathing Light: Enhances your car's interior ambiance with a colorful breathing light, which can be turned off for distraction-free driving.
• Dual Fast Charging (PD 20W & QC 3.0): Equipped with a PD 20W (Type-C) port and a QC3.0 (USB-A) port, offering up to 5 times faster charging for two devices simultaneously. Includes smart charge monitoring to prevent overloads and short circuits.
• Voice Navigation Support: Streams intelligent voice navigation from your phone (Siri/Google Assistant) directly to your car's audio system.
• Voltage Monitor: Displays your car battery voltage for 3 seconds upon power-on, allowing you to easily monitor its condition.

The unibody zinc alloy shell provides both durability and elegance.

4. Package Contents

• 1 x LENCENT Bluetooth 5.3 FM Transmitter (Model BC76)
• 1 x User Manual (this document)

5. Specifications

6. Setup and Installation

1. Insert into Car Socket: Plug the LENCENT FM Transmitter firmly into your car's 12-24V cigarette lighter socket. The device will power on automatically.
2. Voltage Display: Upon power-on, the device's screen will display the car battery voltage for 3 seconds, then switch to displaying the FM frequency.
3. Tune Car Radio: Tune your car's FM radio to an empty frequency, one that has no static or existing radio station interference.
4. Match Frequencies: Adjust the FM frequency on the LENCENT transmitter to match the empty frequency you selected on your car radio. Use the large central button to adjust the frequency.
5. Bluetooth Pairing: Activate Bluetooth on your mobile device (smartphone, tablet, etc.). Search for available devices and select "BC76" to pair. Once paired, you will hear a confirmation tone.

The device displays the current FM frequency and features PD and QC3.0 charging ports.

The device can display the car battery voltage for monitoring.

Product demonstration video showing features like music streaming, hands-free calls, and charging.

7. Operating Instructions

7.1 Music Playback

• Once your mobile device is paired, open your preferred music app and start playing audio. The sound will be transmitted to your car's FM radio.
• Use the previous/next track buttons on the transmitter or your phone to control playback.
• The LENCENT BC76 supports Hi-Fi stereo music streaming for an enhanced audio experience.

Enjoy 360° HiFi stereo music streaming for clear calls and beautiful music.

7.2 Hands-Free Calling

• When a call comes in, press the call button (usually marked with a phone icon) on the transmitter to answer.
• Press the call button again to hang up.
• To reject a call, press and hold the call button.
• To redial the last number, double-press the call button.
• The enhanced Bluetooth 5.3 chip and strong microphone ensure clear call quality.

Enhanced Bluetooth 5.3 provides clear calls and easy access to call functions.

7.3 Fast Charging

• Connect your devices to the PD 20W (Type-C) or QC3.0 (USB-A) port using appropriate charging cables.
• The transmitter supports fast charging for compatible devices, providing efficient power delivery.

Experience 5X faster charging with both PD20W (Type-C) and QC3.0 (USB-A) ports.

7.4 Voice Assistant

• Activate your phone's voice assistant (Siri, Google Assistant, Bixby) through the transmitter for hands-free control of navigation, calls, and other functions.

Activate voice assistants like Siri, Bixby, or Google for simple, stable, and reliable control.

7.5 RGB Lighting Control

• The device features a colorful breathing light. You can turn this light off if you prefer to focus on driving without visual distractions.

The gorgeous and intelligent lighting can be set to rainbow or breathing mode, or turned off.

7.6 Voice Navigation

• The transmitter supports intelligent voice navigation from your smartphone, streaming audio from navigation apps to your car's speakers.

The device supports voice navigation from your smartphone.

8. Maintenance

• Clean the device regularly with a soft, dry cloth. Do not use liquid cleaners or aerosols.
• Keep the device dry. Avoid exposure to water or high humidity.
• Store in a cool, dry place when not in use.
• Do not expose to extreme temperatures or direct sunlight for extended periods.

9. Troubleshooting

• No Power: Ensure the transmitter is fully inserted into the car's cigarette lighter socket. Check if the car's socket is receiving power.
• No Sound/Static:
  • Verify that the FM frequency on the transmitter matches your car radio's frequency.
  • Try changing to a different, unused FM frequency on both the transmitter and your car radio to avoid interference.
  • Adjust the volume on both your car radio and your mobile device.
• Bluetooth Disconnection/Cannot Pair:
  • Ensure Bluetooth is enabled on your mobile device and the transmitter is powered on.
  • Forget the device ("BC76") from your phone's Bluetooth settings and try pairing again.
  • Restart your mobile device and the FM transmitter.
• Charging Not Working:
  • Ensure the charging cable is securely connected to both the transmitter and your device.
  • Check if the charging cable is functional and supports fast charging if desired.
  • Verify your device supports the PD 20W or QC3.0 charging protocols.
• Music/Call Button Stiff: Ensure there are no obstructions around the button. If it remains stiff or unresponsive, contact customer support.
• Voice Lines/Prompts: If you wish to mute voice prompts, check your phone's media volume settings. The device itself does not have a specific mute for internal voice lines.

10. User Tips

• Optimal FM Frequency: Always find an unused FM frequency on your car radio first (one with only static) before setting the transmitter's frequency. This minimizes interference and improves audio quality.
• Charging Cables: For the fastest charging speeds, use high-quality cables that are compatible with PD (Power Delivery) for the Type-C port and QC3.0 (Quick Charge) for the USB-A port.
• Voice Assistant for Safety: Leverage the voice assistant feature (Siri, Google Assistant, Bixby) for navigation and calls to keep your hands on the wheel and eyes on the road.
• Music Source: Remember that the music streams from your connected phone to the transmitter, and then the transmitter broadcasts it to your car's radio via FM.

11. Warranty and Support

LENCENT products are manufactured to high-quality standards. For warranty information, technical support, or any product-related inquiries, please refer to the official LENCENT website or contact their customer service directly. Please retain your proof of purchase for warranty claims.