Introduction
Thank you for purchasing the KAFNHCKA Car Wireless Bluetooth 5.0 Receiver. This device is designed to transform your wired audio systems, such as car stereos, home speakers, or headphones, into wireless Bluetooth-enabled systems. Enjoy seamless music streaming and hands-free calling with ease. Please read this manual carefully before use to ensure proper operation and to maximize your experience.
Safety Information
- Keep the device away from water, moisture, and extreme temperatures.
- Do not attempt to disassemble or repair the device yourself. This may void the warranty and cause damage.
- Use only the specified charging voltage (DC 5V) to prevent damage.
- Avoid prolonged exposure to direct sunlight or heat sources.
Package Contents
- 1 x Bluetooth Audio Receiver (Black)
- 1 x 3.5mm to 3.5mm Adapter
Note: Charging cable is not included in the package. If you require a charging cable, please contact customer service.
Product Overview
The KAFNHCKA Bluetooth receiver is a compact device designed for portability and ease of use. It features intuitive controls and a standard 3.5mm audio jack for broad compatibility.
Figure 1: KAFNHCKA Bluetooth Receiver with Bluetooth 5.0 branding.
Figure 2: Diagram illustrating the connection of the wireless Bluetooth receiver to various devices like tablets, mobile phones, and amplifiers/speakers.
Figure 3: The Bluetooth receiver shown with its included 3.5mm adapter for versatile connectivity.
Figure 4: The portable design of the Bluetooth receiver, featuring a clip for easy attachment.
Setup Instructions
1. Power On/Off
- Power On: Press and hold the power button (
) for three seconds. You will hear the voice prompt "enter pairing mode". - Power Off: Press and hold the power button () for three seconds. You will hear the voice prompt "off".
- Sleep Function: If there is no operation for 15 minutes, the device will automatically enter power-saving sleep mode.
2. Connecting to Audio Devices
- For Headphones: Connect your wired headphones' 3.5mm plug directly into the 3.5mm audio interface of the Bluetooth receiver.
- For Speakers/Car Audio: Use the provided 3.5mm male-to-male adapter. Insert one end into the 3.5mm audio interface of the Bluetooth receiver and the other end into the 3.5mm AUX input of your speaker or car audio system.
Figure 5: The Bluetooth receiver connected to a car stereo's AUX input, enabling hands-free functionality.
Figure 6: The Bluetooth receiver connected to headphones, with a smartphone wirelessly paired for music playback.
3. Pairing with Your Phone
- Ensure the Bluetooth receiver is powered on and in pairing mode (red and blue indicator lights will flash alternately). You will hear the voice prompt "go into pairing mode".
- On your mobile phone, open the Bluetooth settings.
- Search for available Bluetooth devices. The device name will appear as "Bluetooth Music".
- Select "Bluetooth Music" to connect. Once successfully paired, you will hear the voice prompt "Connected", and the blue indicator light will flash slowly (once every 5 seconds).
Operating Instructions
Music Control
- Play/Pause: Short press the power button ().
- Next Song: Short press the "+" button.
- Volume Up: Long press the "+" button.
- Previous Song: Short press the "-" button.
- Volume Down: Long press the "-" button.
Call Management
- Answer Incoming Call: Short press the power button ().
- Reject Incoming Call: Long press the power button ().
- Redial Last Number: Double-click the power button (). To cancel the redial, short press the power button again.
Special Functions
- Self-Timer Function: Double-click the "-" button to activate the self-timer function (requires compatible phone camera app).
- TF Card / Bluetooth Mode Switch: Double-click the "+" button to switch between TF card playback mode and Bluetooth mode.
Video 1: Demonstration of connecting the Bluetooth receiver to a speaker and pairing with a smartphone for music playback and hands-free calls.
Maintenance
- 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 dropping or subjecting the device to strong impacts.
Troubleshooting
| Problem | Solution |
|---|---|
| Device does not power on. | Ensure the device is charged. Connect it to a DC 5V power source using a Mini USB cable. |
| Cannot pair with phone. | Make sure the receiver is in pairing mode (red and blue lights flashing alternately). Ensure Bluetooth is enabled on your phone and search for "Bluetooth Music". Move closer to the device. |
| No sound after connecting. | Check if the receiver is correctly connected to your audio device (headphones/speakers). Ensure the volume on both the receiver and your phone/audio device is turned up. Verify that the audio device's input is set to AUX. |
| Intermittent connection or poor audio quality. | Ensure the device is within the 10-meter receiving distance. Reduce obstacles between the receiver and your phone. Check for interference from other wireless devices. |
Specifications
| Feature | Detail |
|---|---|
| Type | Bluetooth Audio Receiver |
| Material | Plastic |
| Item Color | Black |
| Bluetooth Version | 5.0 + EDR |
| Bluetooth Profile | A2DP |
| Frequency Range | 2.4GHz |
| Transmission Range | Up to 10m / 33ft |
| I/O | 3.5mm female plug, Mini USB female port |
| Power Supply | DC 5V |
| Charge Time | About 30 minutes |
| Talking Time | About 4 hours |
| Music Playback Time | About 4 hours |
| Microphone Sensitivity | ±42dB |
| Output Power | 30mW |
| Frequency Response | 20Hz-20KHz |
| Dimensions (L*W*H) | 1.4*1.5*5.8cm / 0.5*0.6*2.3 inches |
User Tips
- Always ensure the device is in boot mode (red and blue lights flashing alternately) before attempting to pair with your phone.
- The Bluetooth name to look for on your phone is "Bluetooth Music".
- If you need a charging cable, please note it is not included and you may need to acquire one separately or contact customer service.
Warranty and Support
For any issues or questions regarding your KAFNHCKA Bluetooth Receiver, please refer to the seller's support channels. You can also refer to the User Manual (PDF) for additional information.