1. Introduction
The BT29 is a versatile in-car device combining a Bluetooth 5.0 FM transmitter, MP3 player, and QC3.0 fast charger. It allows you to stream music wirelessly from your smartphone, play audio from TF cards or USB drives, make hands-free calls, and charge your devices quickly. This manual provides detailed instructions for its setup, operation, and maintenance.
2. Package Contents
Please check the box for the following items:
- BT29 Host Unit
- User Manual (Chinese and English)
- 3.5mm Audio Cable
3. Setup
Insert into Car Cigarette Lighter: Plug the BT29 device into your car's 12V-24V cigarette lighter socket.
Figure 3.1: BT29 inserted into a car's cigarette lighter socket. Adjust Position: The device features a 90-degree rotating joint for flexible positioning, allowing you to adjust it for optimal viewing and access without obstruction.
Figure 3.2: The BT29 features a 90-degree rotating skill for convenient operation and space-saving. Power On: The device will power on automatically when plugged in. The 1.44-inch TFT color screen will display information.
FM Frequency Matching: Tune your car's FM radio to an empty frequency (one with no static or broadcast). Then, adjust the BT29's FM frequency to match your car radio's frequency. This is typically done by rotating the CH+/- knob or using menu settings.
Bluetooth Pairing:
- On your smartphone, enable Bluetooth.
- Search for available devices and select 'BT29' to pair.
- Once paired, you can stream audio from your phone to your car's speakers via the FM frequency.
4. Operating Instructions
4.1 Button Operations
The BT29 features intuitive buttons for controlling various functions:
- Power On/Off / Volume+/- / CH+/-: Rotate the left knob to adjust volume or change FM channels. Press to power on/off.
- Menu: Access settings and options.
- Play/Pause / Previous/Next Song: Press the right knob to play/pause. Rotate to switch between songs.
- Answer/Hang Up Call: Press the dedicated call button once to answer an incoming call, long press to reject. Press again to hang up.
4.2 Music Playback
The BT29 supports multiple music playback sources:
- Bluetooth: Once paired with your smartphone, play music from your phone's music library or streaming apps.
- TF Card: Insert a TF card (up to 128GB) loaded with MP3/WMA music files into the TF card slot. The device will automatically detect and play the music.
- U Disk: Insert a USB flash drive (up to 128GB) with MP3/WMA music files into the USB port. The device will automatically detect and play the music.
- AUX Input/Output: Use the provided 3.5mm audio cable to connect external audio devices for playback or to output audio to a car stereo with an AUX input.
4.3 Hands-free Calling
With Bluetooth connected, you can make and receive calls safely while driving:
- Answer Call: Press the call button once.
- Reject Call: Long press the call button.
- Hang Up Call: Press the call button once during a call.
4.4 Charging Function
The BT29 is equipped with a QC3.0 fast charging port and a Type-C port to quickly charge your mobile devices.
4.5 Voice Navigation
When connected to your smartphone, the BT29 can broadcast voice navigation instructions from your phone's navigation app through your car's speakers, making directions clearer and safer to follow.
4.6 Power-off Memory
The device features a power-off memory function. When you restart the device, it will automatically reconnect to the last paired Bluetooth device, remember the last FM frequency, and resume playing the last song from where it left off.
5. Maintenance
- Keep the device dry and clean. Avoid exposure to moisture or extreme temperatures.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure the heat dissipation holes are not blocked to maintain optimal performance.
6. Troubleshooting
- No Power: Ensure the device is securely plugged into the cigarette lighter socket and your car's ignition is on. Check the car's fuse for the cigarette lighter.
- Poor FM Signal/Static: Try different FM frequencies on both the device and your car radio until you find a clear channel. Avoid frequencies used by local radio stations.
- Bluetooth Connection Issues: Ensure Bluetooth is enabled on your phone and the device is in pairing mode. Forget the device from your phone's Bluetooth list and try pairing again.
- Music Not Playing: Check if the correct playback mode (Bluetooth, TF card, U disk) is selected. Ensure audio files are in MP3/WMA format and the storage device is properly inserted.
- Charging Not Working: Verify that the charging cable is securely connected to both the BT29 and your mobile device. Ensure your device supports QC3.0 for fast charging.
7. Specifications
| Feature | Specification |
|---|---|
| Model | BT29 |
| Bluetooth Version | 5.0 + EDR |
| Bluetooth Sound Processing | A2DP |
| Bluetooth Microphone Effective Distance | 0.5 - 2 meters |
| Bluetooth Transmission Distance | 10 meters |
| Display Screen | 1.44 inch TFT Color Screen |
| TF & U Disk Support | Up to 128 GB |
| Music Format | MP3 / WMA |
| FM Transmission Frequency | 87.5 - 108.0 MHz |
| Working Voltage | 12 - 24V |
| Operating Temperature | 0 - 40°C |
| Distortion | <0.1 |
| Signal to Noise Ratio | >60dB |
| AUX | Output/Input |
| USB / Type-C | QC3.0 Fast Charge |
| Product Size (L*W*H) | 9 * 8 * 5 CM |
| Product Weight | 79.8 G |
7.1 Safety Features
The BT29 is designed with eight intelligent protection features to ensure safe operation and protect your vehicle and devices:
- Overload Protection
- Over-temperature Protection
- Over-current Protection
- Short-circuit Protection
- Over-voltage Protection
- Under-voltage Protection
- Reverse Connection Protection
- Electromagnetic Protection
7.2 Real-time Voltage Warning
The device provides real-time voltage monitoring and warnings to help you keep track of your car battery's health. High-definition display makes safety reminders clear at a glance. Voltage too low or too high can damage the battery and prevent the car from starting.
| Car Type | Abnormal Range | Normal Range Before Start | Normal Range After Start |
|---|---|---|---|
| 12V Car | <11.6V or >14.8V | 11.6V - 12.8V | 11.6V - 14.8V |
| 24V Car | <23.2V or >27.2V | 23.2V - 25.6V | 23.2V - 27.2V |
8. User Tips
- Optimal Positioning: Utilize the 90-degree rotation feature to position the device so that the screen is easily visible and buttons are accessible without obstructing your view of the road.
- Clear FM Channel: Always try to find the clearest possible FM frequency with minimal static for the best audio quality. This might require scanning through several frequencies.
- Maximize Charging Speed: For optimal fast charging, use a compatible QC3.0 cable with your devices.
- App Compatibility: The BT29 is compatible with a wide range of mainstream music and navigation apps on both Android and Apple platforms, offering seamless integration for your in-car entertainment and guidance.
9. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the point of purchase. Keep your proof of purchase for any warranty claims.
