LENCENT BT99 FM Transmitter User Manual

1. Introduction

Thank you for choosing the LENCENT BT99 FM Transmitter. This device is designed to enhance your in-car audio experience by allowing you to stream music, make hands-free calls, and charge your devices efficiently. Please read this manual carefully to ensure proper use and optimal performance.

Figure 1: LENCENT BT99 FM Transmitter Overview

2. Specifications

3. Setup Instructions

1. Installation: Insert the LENCENT BT99 FM Transmitter into your car's cigarette lighter socket (12-24V).
2. Power On: The device will automatically power on and its 1.8" LCD screen will light up.
3. FM Frequency Tuning:
   • Tune your car's FM radio to an unused, blank frequency. Use the 'Manual Search' mode on your car radio to find a frequency with no broadcast.
   • Adjust the FM frequency on the LENCENT BT99 to match the frequency selected on your car radio. This ensures a clear audio connection.
   

   Figure 2: FM Frequency and Volume Adjustment Steps
4. Bluetooth Pairing:
   • On your smartphone or other Bluetooth-enabled device, enable Bluetooth.
   • Search for available devices and select 'BT99' to pair.
   • Once paired, the device name will be displayed on the BT99's LCD screen.

4. Operating Instructions

4.1. Music Playback

The LENCENT BT99 supports multiple music sources:

• Bluetooth Streaming: After successful Bluetooth pairing, play music from your smartphone. The audio will be transmitted to your car's speakers via the selected FM frequency.
• USB Disk / TF Card: Insert a USB flash drive or TF card (up to 64GB) containing MP3, WMA, WAV, or FLAC audio files into the designated port. The device will automatically detect and play music from the storage device.
• AUX Port: Connect an external audio device (e.g., MP3 player) via a 3.5mm AUX cable to the AUX port on the transmitter.

Figure 3: Multiple Music Source Options

4.2. Audio Control

• Volume Adjustment: Use the rotary knob on the device to adjust the output volume. For optimal sound, refer to the volume adjustment tips in the Troubleshooting section.
• Bass and Treble Control: The BT99 features dedicated buttons for Bass and Treble control, allowing you to customize your sound experience. Press the 'BASS' or 'TRE' buttons to activate/deactivate the respective sound enhancement.

Figure 4: Bass and Treble Control

4.3. Hands-Free Calling

When a call comes in, the music will pause, and the caller ID will be displayed on the LCD screen.

• Answer/End Call: Press the designated button (usually the multi-function button) once to answer an incoming call or end an ongoing call.
• Reject Call: Press and hold the designated button to reject an incoming call.
• Redial: Double-press the designated button to redial the last number.
• The built-in CVC noise cancellation microphone helps reduce background noise for clearer conversations.

Figure 5: Hands-Free Calling in Action

4.4. Charging Devices

The LENCENT BT99 is equipped with dual USB charging ports:

• QC3.0 Port: Provides fast charging for compatible devices, up to 4 times faster than standard chargers.
• 2.4A USB Port: Offers standard charging for other devices.

Figure 6: Dual USB Charging Ports

4.5. Voice Navigation

The device supports smart voice navigation from your phone. Audio from navigation apps (e.g., Google Maps, Apple Maps) or voice assistants (Siri, Google Assistant) will be streamed to your car's speakers.

5. Maintenance

• Keep the device dry. Avoid exposure to moisture or liquids.
• Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Store the device in a cool, dry place when not in use.
• Avoid exposing the device to extreme temperatures (hot or cold).

6. Troubleshooting

6.1. Static Noise / Poor Audio Quality

1. Find a Blank Frequency: Ensure your car radio is set to 'Manual Search' mode and tuned to a completely blank FM frequency (one with no active broadcast). The clearer the frequency, the better the sound quality.
2. Match Frequencies: Verify that the FM frequency on your LENCENT BT99 transmitter exactly matches the blank frequency selected on your car radio.
3. Adjust Volume Levels:
   • Increase your phone's volume to maximum.
   • Set your car speaker volume to approximately 40% (do not exceed 60% to avoid distortion).
   • Set the transmitter's volume to around 60% (do not exceed 80%).

   Adjustment Steps: Phone Volume → FM Transmitter Volume → Car Speaker Volume

6.2. Bluetooth Connection Issues

• Ensure Bluetooth is enabled on your smartphone and the BT99 is powered on.
• Delete 'BT99' from your phone's Bluetooth device list and attempt to re-pair.
• Restart both your phone and the FM transmitter.

6.3. No Sound

• Check all volume levels (phone, transmitter, car radio).
• Verify that the FM frequency on the transmitter matches your car radio.
• Ensure the correct music source (Bluetooth, USB, TF, AUX) is selected on the transmitter.

7. User Tips

• Stereo Sound: The LENCENT BT99 supports Hi-Fi music streaming, providing a stereo audio experience through your car's speakers.
• Enhanced Audio: Utilize the dedicated BASS and TREBLE control buttons to fine-tune your audio output according to your preference for a more dynamic sound.
• Clear Display: The 1.8-inch LCD screen provides clear visibility of information such as Bluetooth name, FM channel, music details, and incoming calls, even in varying light conditions.
• Optimal Call Clarity: The upgraded CVC noise-cancelling microphone is designed to minimize background noise, ensuring clearer hands-free calls. Position the flexible neck of the device for best microphone pickup.

8. Warranty and Support

The LENCENT BT99 FM Transmitter comes with an exclusive lifetime warranty service, demonstrating our commitment to quality and customer satisfaction.

If you encounter any connection issues or problems during use, please contact the LENCENT FM Transmitter Office Store directly. We are dedicated to providing a satisfying solution for you.

Contact Information: Please refer to your purchase documentation or the seller's store page for direct contact methods.