Important Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Do not insert wet or hot batteries into the device.
- Avoid using the device near water or in excessively humid environments.
- Dispose of batteries safely and according to local regulations.
- To prevent interference, avoid placing the device too close to other wireless electronic devices.
- Ensure the device is securely plugged into the car's cigarette lighter socket to prevent dislodgement during driving.
Product Overview
The LENCENT BT27 is a versatile Bluetooth FM transmitter designed to enhance your in-car audio and charging experience. It features Bluetooth 5.4 for stable connections, dual USB-C PD 30W ports for rapid charging, hands-free calling, Hi-Fi deep bass, and customizable 7-color LED lighting.
Figure 1: LENCENT BT27 Bluetooth FM Transmitter
Key Components:
- Dual USB-C PD 30W Ports: For fast charging compatible devices.
- USB-A Port: For USB drive music playback (up to 64GB) and standard charging.
- Multi-function Knob: Controls FM frequency, volume, and call management.
- LED Display: Shows FM frequency and car battery voltage.
- Bass Button: Activates deep bass mode.
- Light Button: Controls 7-color LED ambient lighting.
- Microphone: Integrated for hands-free calling with CVC noise reduction.
Features
- Hi-Fi Deep Bass: Enhance your audio experience with powerful bass by pressing the dedicated 'Bass' button. Features clear stereo sound and optional 7-color LED ambient lights.
- 60W Dual USB Fast Charging: Equipped with two USB-C (PD 30W) ports, delivering a total maximum output of 60W. Capable of charging an iPhone up to 70% in under 30 minutes. Includes a safe charging system to prevent overcharging and overheating.
- Advanced Bluetooth 5.4 Technology: Ensures faster pairing, smoother transmission, and a more stable audio stream with extremely low latency. Supports Bluetooth audio streaming and USB drive playback (up to 64GB).
- Hands-Free Calls & Voice Control: Features a built-in microphone with CVC noise reduction for clear voice capture, reducing interference and echo. Supports voice commands for calls, podcasts, or navigation, promoting safer driving.
- Compact and Compatible Design: Its compact size saves space and makes it portable. Compatible with most 12V to 24V vehicles and a variety of Bluetooth devices.
Setup and Installation
- Insert the FM Transmitter: Plug the LENCENT BT27 into your car's 12V/24V cigarette lighter socket. The LED display will light up, showing the car battery voltage and then 'bt' (Bluetooth mode).
Figure 2: Plugging in the FM Transmitter
- Tune Your Car Radio: Turn on your car's FM radio and find an empty, unused frequency (one with static, typically between 87.5 MHz and 108.0 MHz).
Figure 3: Tuning the car radio to an empty frequency
- Set Transmitter Frequency: Press and hold the multi-function knob on the BT27 until the FM frequency on its LED display starts flashing. Rotate the knob left or right to match the frequency to the empty station you found on your car radio. Once matched, the connection is established.
Figure 4: Adjusting the transmitter's FM frequency
- Pair via Bluetooth: On your smartphone, enable Bluetooth and search for available devices. Select 'BT27' from the list to pair. A voice prompt will confirm successful connection. You can now stream audio from your phone to your car speakers.
Figure 5: Bluetooth pairing with your smartphone
Operating Instructions
Music Playback:
- Bluetooth Streaming: Once paired, play music on your smartphone, and it will stream through your car's speakers.
- USB Drive Playback: Insert a USB drive (FAT32 format, up to 64GB) into the USB-A port. The device will automatically switch to USB playback mode.
- Volume Control: Rotate the multi-function knob to adjust the volume.
- Track Control: Use the 'Previous Track' and 'Next Track' buttons to skip songs.
- Play/Pause: Press the multi-function knob once to play or pause music.
- Deep Bass Mode: Press the 'Bass' button once to activate or deactivate the deep bass sound effect.
Figure 6: Activating Deep Bass Mode
Hands-Free Calling:
- Answer Call: Press the multi-function knob once to answer an incoming call.
- Reject Call: Press and hold the multi-function knob to reject an incoming call.
- End Call: Press the multi-function knob once during a call to hang up.
- Redial: Double-press the multi-function knob to redial the last number.
Figure 7: Hands-Free Calling in a Car
Voice Assistant:
- Activate Voice Assistant: Press and hold the multi-function knob to activate your smartphone's voice assistant (Siri, Google Assistant).
Figure 8: Activating Siri or Google Assistant
LED Ambient Lights:
- Change/Turn On/Off Lights: Press the 'Light' button once to cycle through the 7 available colors or turn the lights on/off.
Figure 9: Customizable 7-Color LED Lights
Charging Devices:
- Connect your devices to the USB-C (PD 30W) ports for rapid charging.
- The USB-A port also provides charging capabilities.
Figure 10: Dual USB-C Fast Charging
Maintenance
- Keep the device dry and clean. Avoid exposure to liquids.
- Do not disassemble the device. Repairs should only be performed by qualified personnel.
- Store in a cool, dry place when not in use.
- Regularly check the cigarette lighter socket for debris that might affect connection.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or static during music playback. | FM frequency mismatch or interference. | Ensure the transmitter and car radio are on the same empty FM frequency. Try a different empty frequency. |
| Bluetooth connection unstable or fails. | Device too far from phone, interference, or incorrect pairing. | Ensure phone is close to the transmitter. Re-pair the device. Check for other Bluetooth devices causing interference. |
| Slow charging or no charging. | Cable issue, device not fully inserted, or device not compatible with fast charging. | Use a high-quality charging cable. Ensure the transmitter is fully inserted. Check if your device supports PD 30W charging. |
| Poor call quality (echo/noise). | Microphone obstruction or excessive background noise. | Ensure the microphone is not obstructed. Reduce car fan speed or window opening. The CVC noise reduction should minimize most background noise. |
Specifications
- Model: BT27
- Bluetooth Version: 5.4
- Input Voltage: 12V-24V DC
- USB-C Output (PD): 30W (each port), Total 60W
- USB-A Output: Standard charging (also for USB drive playback)
- FM Frequency Range: 87.5-108.0 MHz
- Supported Audio Formats: MP3, WMA, WAV, FLAC (via USB drive)
- USB Drive Capacity: Up to 64GB
- Dimensions: 8.5 x 5.1 x 4 cm
- Weight: 85 grams
- Material: Plastic, Metal
- Additional Features: CVC Noise Reduction, Siri & Google Voice Assistant, Car Voltage Monitoring, 7-Color LED Ambient Light.
Warranty and Support
LENCENT products are designed for reliability and user satisfaction. For any issues or support needs, please refer to the following:
- Warranty: This product comes with a standard manufacturer's warranty. Please retain your proof of purchase for warranty claims.
- Customer Service: For assistance, you can contact LENCENT customer support via email, Amazon chat, or visit the official LENCENT website.
- Returns: Refer to the retailer's return policy for details on product returns.
Figure 11: LENCENT Multichannel Support
