Introduction
The HOCO E82 Car Bluetooth FM Transmitter is designed to enhance your in-car audio experience by providing wireless music streaming, hands-free calling, and fast charging capabilities. This manual will guide you through the setup, operation, and maintenance of your device.
Figure 1: HOCO E82 Car Bluetooth FM Transmitter Overview
Safety Information
Please read and follow these safety guidelines to ensure proper operation and prevent damage to the device or vehicle:
- Do not expose the device to extreme temperatures, direct sunlight, or moisture.
- Do not disassemble or attempt to repair the device yourself.
- Keep out of reach of children.
- Ensure the device is securely plugged into the car's cigarette lighter socket.
- Always prioritize safe driving. Do not operate the device in a way that distracts you from the road.
Figure 2: Built-in Protection Features
Package Contents
- HOCO E82 Car Bluetooth FM Transmitter
- User Manual (this document)
Setup Guide
-
Insert into Car Socket: Plug the HOCO E82 into your car's 12V/24V cigarette lighter socket. The device will power on automatically, and the LED display will show the current FM frequency.
Figure 3: Device Installation in Car
-
Tune FM Frequency:
- Press and hold the phone button (green icon) to enter FM mode.
- Rotate the knob left or right to select an empty FM frequency (one with no radio station broadcasting).
- Tune your car radio to the same empty FM frequency.
-
Bluetooth Pairing:
- The device will automatically enter Bluetooth pairing mode when powered on. The LED display will show "BT".
- On your smartphone, enable Bluetooth and search for available devices.
- Select "HOCO E82" from the list to pair. Once connected, the device will confirm with an audio prompt.
Operating Instructions
Figure 4: Button Description and Operation Guide
Music Playback
-
Bluetooth Audio: Once paired, music played on your phone will be transmitted to your car's stereo via the selected FM frequency.
Figure 5: Bluetooth 5.3 for Quality Audio
-
USB Flash Drive Playback: Insert a USB flash drive (up to 32GB, formatted as FAT32) containing MP3/WMA/WAV/FLAC audio files into the dedicated USB music port (5V/0.5A). The device will automatically switch to USB mode and begin playback.
Figure 6: USB Flash Drive Playback
- Switching Modes: Press and hold the 'M' button to switch between Bluetooth and USB playback modes.
-
Controls:
- Press the 'Previous Song' button (<) to go to the previous track.
- Press the 'Next Song' button (>) to go to the next track.
- Press the phone button (green icon) to play/pause music.
- Rotate the phone button (green icon) left/right to adjust volume.
Hands-Free Calling
-
Answer/Hang Up: When a call comes in, press the phone button (green icon) to answer. Press it again to hang up.
Figure 7: One-Click Answer for Hands-Free Calls
- Reject Call: Press and hold the phone button (green icon) to reject an incoming call.
- Redial: Double-press the phone button (green icon) to redial the last number.
Charging Functions
- USB-C Output (PD30W): Provides fast charging for compatible devices like smartphones, tablets, and laptops (e.g., iPad/MacBook). Supports PD3.0, QC2.0/3.0, AFC, FCP, SCP protocols.
- USB-A Output (QC3.0): Provides fast charging for compatible devices. Supports QC2.0/3.0, AFC, FCP, SCP protocols.
-
USB Music Interface (5V/0.5A): This port is primarily for USB flash drive playback but can also provide a slow charge for small devices.
Figure 8: Fast Charging Ports and Capabilities
LED Display and Lighting
- LED Display: Shows the current FM frequency and Bluetooth status.
-
RGB Colorful Breathing Light: The device features an RGB light ring. Press the 'M' button (short press) to switch between different LED lighting effects.
Figure 9: RGB Lighting and LED Display
Maintenance
- Clean the device with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Ensure the cigarette lighter socket and USB ports are free of dust and debris.
- Store the device in a cool, dry place when not in use for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/LED display off | Device not properly inserted; car socket fuse blown; car engine off. | Ensure device is fully inserted. Check car's cigarette lighter fuse. Start car engine. |
| No sound or poor sound quality | FM frequency interference; volume too low; car radio not tuned to correct frequency. | Find a clearer FM frequency on the E82 and car radio. Increase volume on both device and car stereo. |
| Bluetooth pairing failure | Bluetooth not enabled on phone; device not in pairing mode; too many paired devices. | Ensure phone Bluetooth is on. Restart E82. Forget previous Bluetooth connections on phone. |
| Fast charging not working | Cable not compatible; device not supporting fast charge protocols; cable loose. | Use a high-quality, fast-charging compatible cable. Ensure your device supports PD/QC protocols. Check cable connection. |
| USB flash drive not playing | USB drive not formatted correctly (FAT32); unsupported audio format; drive capacity too large. | Ensure USB drive is FAT32 and under 32GB. Use supported audio formats (MP3/WMA/WAV/FLAC). |
Specifications
Figure 10: Product Dimensions and Key Parameters
| Feature | Detail |
|---|---|
| Model Number | E82 |
| Brand Name | HOCO |
| Dimensions (L*W*H) | 83mm * 48mm * 48mm |
| Weight | 42g |
| Bluetooth Version | 5.3 |
| Input Voltage | DC12V-24V |
| FM Frequency Range | 87.5-108MHz |
| FM Launch Distance | 5 meters |
| Bluetooth Transmission Range | 10 meters |
| Bluetooth Transmission Frequency | 2.4GHz |
| USB Music Interface Output | 5V/0.5A |
| USB-C Output (PD) | 30W (5V/3A, 9V/3A, 12V/2.5A, 15V/2A, 20V/1.5A) |
| USB-A Output (QC) | 30W (5V/3A, 9V/3A, 12V/2.5A, 20V/1.5A) |
| Combined USB-A + USB-C Output | 5V/4.5A |
| Supported Playback | Bluetooth, USB flash drive (<32G) |
| Supported Fast Charge Protocols | PD3.0, QC2.0, QC3.0, AFC, FCP, SCP |
| Safety Protections | Overcharge, Over-discharge, Overvoltage, Temperature, Over-power, Short circuit |
User Tips
- For the best audio quality, always try to find an FM frequency that is completely clear of any radio stations.
- If you experience static, try changing the FM frequency on both the transmitter and your car radio.
- When using the fast charging ports, ensure your charging cable is rated for the appropriate power delivery (e.g., 30W PD cable for USB-C).
- The RGB breathing light can be adjusted or turned off by short-pressing the 'M' button, which can be useful for night driving.
Warranty and Support
For warranty information or technical support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt for any warranty claims.
