1. Important Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in injury or damage.
- Do not use this device while driving if it distracts you from operating your vehicle safely.
- Keep the device away from excessive heat, direct sunlight, and moisture.
- This device may interfere with other wireless devices.
- Do not dispose of the battery in fire.
- Recycle the device and its battery according to local regulations.
2. Product Overview
2.1 Package Contents
- SIMOLIO Bluetooth 5.0 AUX Receiver (Model JH-215A)
- 3.5mm Audio Cable (Male to Male)
- 3.5mm Male-to-Male Connector
- USB-C to USB-A Charging Cable
- User Manual
2.2 Key Features
- Bluetooth 5.0 Technology: Ensures fast transmission, stable connection, and an extended working range of up to 70 feet.
- Long Battery Life: Up to 35 hours of continuous music playback or phone calls on a single charge.
- Fast Charging: Fully charges in approximately 1.5 hours.
- Hands-Free Calling: Built-in microphone and Multi-Function Button (MFB) for easy call management.
- Voice Navigation Support: Broadcasts voice notifications from navigation apps.
- Volume and Track Control: Integrated buttons for adjusting volume and skipping tracks.
- Dual Connection: Connects to two Bluetooth-enabled devices simultaneously.
- Automatic Power-off: Powers off after 10 minutes of inactivity to conserve battery.
2.3 Product Diagram

Image: Front view of the SIMOLIO Bluetooth Receiver JH-215A, showing the 3.5mm audio jack, multi-function button, and SIMOLIO branding.

Image: The SIMOLIO Bluetooth Receiver plugged into a car's AUX port, highlighting its Bluetooth 5.0 features: Fast Transmission, Steady Pairing, Wide Range (70ft), and Dual Connection.
3. Setup
3.1 Charging the Device
Before first use, fully charge the SIMOLIO Bluetooth Receiver.
- Connect the provided USB-C charging cable to the charging port on the receiver.
- Connect the other end of the USB-A cable to a USB power adapter (not included) or a powered USB port.
- The LED indicator will show red during charging and turn off when fully charged.
- Charging typically takes about 1.5 hours.

Image: The SIMOLIO Bluetooth Receiver illustrating its 35-hour battery life, 1.5-hour fast charging, 10-minute auto power-off, and USB-C charging port.
3.2 Powering On/Off
- To Power On: Press and hold the Multi-Function Button (MFB) for approximately 3 seconds until the LED indicator flashes blue.
- To Power Off: Press and hold the MFB for approximately 3 seconds until the LED indicator turns off.

Image: A hand pressing the Multi-Function Button to power on the SIMOLIO Bluetooth Receiver.
3.3 Connecting to an Audio System (Plug In)
The receiver can be connected to various audio systems using the 3.5mm AUX port.
- For Car Stereo/Home Stereo/Speakers/Amplifiers: Use the provided 3.5mm audio cable (male to male) to connect the receiver's 3.5mm jack to the AUX input of your audio system.
- For Wired Headphones: Plug your wired headphones directly into the 3.5mm jack of the receiver.

Image: The SIMOLIO Bluetooth Receiver being plugged into an AUX port, typically in a car.

Image: A visual representation of the SIMOLIO Bluetooth Receiver connecting to a car stereo, speaker, amplifier, wired headphones, cell phone, tablet, laptop, and MP3 player via the 3.5mm AUX port.
3.4 Bluetooth Pairing
After powering on, the receiver will automatically enter pairing mode if not connected to a previously paired device. The LED indicator will flash blue rapidly.
- Ensure the receiver is powered on and in pairing mode (rapidly flashing blue LED).
- On your Bluetooth-enabled device (e.g., smartphone, tablet), go to the Bluetooth settings.
- Search for available devices and select "SIMOLIO 215A" from the list.
- Once connected, the LED indicator will show a solid blue light or flash slowly.
- The receiver will automatically reconnect to the last paired device when powered on, if it is within range.

Image: A smartphone screen displaying Bluetooth settings, with "SIMOLIO 215A" listed as a connectable device.
4. Operating Instructions
4.1 Music Playback
Once paired and connected to your audio system, you can stream music wirelessly from your device.
- Play/Pause: Short press the Multi-Function Button (MFB).
- Next Track: Short press the "+" button.
- Previous Track: Short press the "-" button.
- Volume Up: Press and hold the "+" button for 2 seconds.
- Volume Down: Press and hold the "-" button for 2 seconds.

Image: A smartphone displaying a music player interface, indicating music is playing through the connected SIMOLIO Bluetooth Receiver.

Image: A person relaxing on a couch, enjoying wireless music streamed from a smartphone to speakers connected via the SIMOLIO Bluetooth Receiver.
4.2 Hands-Free Calling
The built-in microphone allows for hands-free phone calls when connected to your smartphone.
- Answer Call: Short press the MFB when a call comes in.
- End Call: Short press the MFB during a call.
- Reject Call: Press and hold the MFB for 2 seconds when a call comes in.
- Redial Last Number: Double-press the MFB when not on a call.

Image: A man driving, engaged in a hands-free phone call, with the SIMOLIO Bluetooth Receiver visible and its microphone highlighted.
4.3 Voice Navigation
The receiver supports broadcasting voice notifications from your smartphone's navigation applications through your connected audio system.
- Ensure your smartphone is paired and connected to the receiver.
- Start your preferred navigation app on your smartphone.
- Voice directions will be played through your car's speakers or connected audio system.

Image: A smartphone mounted in a car, displaying a navigation map, with the SIMOLIO Bluetooth Receiver plugged into the car's AUX port, indicating voice navigation functionality.
4.4 Dual Connection
The SIMOLIO Bluetooth Receiver can connect to two Bluetooth-enabled devices simultaneously.
- Pair the first device following the "Bluetooth Pairing" instructions (Section 3.4).
- After the first device is connected, disable Bluetooth on the first device. The receiver will re-enter pairing mode.
- Pair the second device following the "Bluetooth Pairing" instructions.
- Once the second device is connected, re-enable Bluetooth on the first device. Both devices should now be connected to the receiver.
- You can now switch between playing music or taking calls from either connected device.

Image: A diagram illustrating the SIMOLIO Bluetooth Receiver connected to two separate smartphones, one for calls and one for music, demonstrating its dual connection capability.
5. 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 the device or subjecting it to strong impacts.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery. | Charge the device for at least 1.5 hours. |
| Cannot pair with a Bluetooth device. | Receiver not in pairing mode; Bluetooth off on source device; device too far. | Ensure receiver is flashing blue rapidly. Turn on Bluetooth on your device. Move devices closer. Forget previous pairings on your device and try again. |
| No audio or low volume. | Incorrect connection; volume too low on receiver or source device; incorrect AUX input selected. | Ensure the 3.5mm cable is securely connected. Increase volume on both the receiver and your source device. Select the correct AUX input on your car/home stereo. |
| Sound quality is poor or intermittent. | Interference; device too far from source; low battery. | Move closer to the source device. Ensure no strong Wi-Fi or other wireless signals are causing interference. Charge the device. |
| Hands-free calling not working. | Microphone blocked; not connected properly. | Ensure the microphone is not covered. Re-pair the device. Check phone settings for call audio routing. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | JH-215A |
| Bluetooth Version | 5.0 |
| Battery Life (Music/Calls) | Up to 35 hours |
| Charging Time | Approx. 1.5 hours |
| Connectivity | Bluetooth, 3.5mm AUX |
| Operating Range | Up to 70 feet (21 meters) |
| Power Source | Battery Powered (1 Lithium Ion battery, included) |
| Item Weight | 0.634 ounces (approx. 18 grams) |
| Package Dimensions | 4.33 x 4.13 x 1.06 inches |
8. Warranty and Support
SIMOLIO products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty from the date of purchase. For detailed warranty information, product support, or to register your product, please visit the official SIMOLIO website or contact customer service.
SIMOLIO Customer Service: Please refer to the contact information provided on the product packaging or the official SIMOLIO website for assistance.