1. Introduction
The KINDRM Bluetooth Aux Adapter Receiver (Model: SR11) is designed to transform your traditional wired audio systems into wireless Bluetooth-enabled devices. This portable adapter allows you to stream music and manage calls hands-free from your smartphone or other Bluetooth-enabled devices to your car stereo, home stereo, wired headphones, or speakers. It features Bluetooth 5.0 technology for stable connections and supports TF card music playback.
2. Key Features
- Wireless Audio Streaming: Converts non-Bluetooth audio systems (car/home stereo, speakers, wired headphones) into wireless streaming devices.
- Advanced Bluetooth 5.0: Ensures stable, faster transmission, lower power consumption, and low-latency audio. Supports A2DP, AVRCP, HSP, and HFP profiles.
- Hands-Free Calling: Built-in high-definition microphone for clear hands-free calls. Easily answer, redial, hang up, or reject calls using the 'M' button.
- Navigation Voice Broadcast: Supports broadcasting voice notifications from navigation applications.
- TF Card Playback: Enjoy high-definition stereo music directly from a TF card without needing a Bluetooth connection.
- Long Battery Life: Integrated lithium polymer battery provides up to 14 hours of continuous music streaming, GPS, or hands-free calls.
- Portable Design: Compact with a clip for easy carrying and versatile use.
- Wide Compatibility: Compatible with most mobile devices (iPhone, Samsung, etc.) and any audio equipment with a 3.5mm AUX input.
Illustration of the Bluetooth 5.0 smart chip inside the adapter, highlighting features like Bluetooth 5.0, HD Call, HIFI Sound, and TF Card Play.
Diagram showing the adapter's 200mAh high-capacity battery, 2.5 hours charging time, and up to 14 hours of working time. It also shows the USB-C charging port.
3. Package Contents
Please check the box for the following items:
- KINDRM Bluetooth Aux Adapter Receiver (Model: SR11)
- USB-C Charging Cable
- 3.5mm Audio Cable
- User Manual
The KINDRM Bluetooth Aux Adapter Receiver shown with its included 3.5mm audio cable.
4. Setup and Installation
4.1 Charging the Device
Before first use, fully charge the adapter. Connect the provided USB-C charging cable to the adapter's charging port and the other end to a USB power source (e.g., computer USB port, wall adapter). The charging indicator light will show the charging status. A full charge takes approximately 2.5 hours.
The device supports playing while charging.
Close-up view of the USB-C charging port on the adapter.
4.2 Connecting to Audio Equipment
Connect the KINDRM Bluetooth Aux Adapter Receiver to your non-Bluetooth audio device (headphones, speakers, car stereo, home stereo) using the provided 3.5mm audio cable. Insert one end into the adapter's 3.5mm audio jack and the other end into the AUX input of your audio equipment.
The adapter's wide range of applications, including connection to car AUX, home stereo, speakers, and wired headphones.
5. Operating Instructions
5.1 Bluetooth Pairing
- Ensure the adapter is connected to your audio output device (e.g., headphones, car stereo).
- Press and hold the 'M' (Multi-function) button on the Bluetooth receiver for approximately 3 seconds until the blue and red indicator lights begin blinking alternately. This indicates pairing mode.
- On your mobile phone or music device, turn on the Bluetooth function.
- Search for available Bluetooth devices and select [SR11] from the list.
- Once pairing is successful, the indicator light will turn solid blue or flash blue slowly. You can now enjoy wireless music.
Note: This Bluetooth receiver adapter does not support multipoint connections (connecting to two devices simultaneously).
5.2 Hands-Free Calling and Navigation
With the built-in microphone, you can manage calls directly through the adapter:
- Answer/End Call: Short press the 'M' button.
- Reject Call: Press and hold the 'M' button for 2 seconds.
- Redial Last Number: Double-press the 'M' button.
The adapter also supports broadcasting voice notifications from your smartphone's navigation applications through the connected audio system.
The adapter in use within a car, demonstrating its capabilities for wireless music, hands-free calls, and voice navigation.
5.3 TF Card Music Playback
Insert a TF (microSD) card loaded with music files into the designated slot on the adapter. The device will automatically switch to TF card playback mode. Use the volume +/- buttons to navigate tracks (long press for volume, short press for next/previous track).
Close-up view of the TF card slot on the adapter.
6. Maintenance
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Keep the device away from extreme temperatures, direct sunlight, and moisture.
- Store the adapter in a cool, dry place when not in use.
- Avoid dropping or subjecting the device to strong impacts.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is depleted. | Charge the device fully using the provided USB-C cable. |
| Cannot pair with Bluetooth device. | Adapter not in pairing mode; Bluetooth on source device is off; too many devices connected; interference. |
|
| No sound or low volume. | Volume too low on adapter or source device; incorrect AUX connection; adapter not paired. |
|
| Poor sound quality or static. | Interference; device too far from source; low battery. |
|
8. Specifications
- Model: SR11
- Bluetooth Version: 5.0
- Supported Profiles: A2DP, AVRCP, HSP, HFP
- Connectivity: Bluetooth, 3.5mm AUX, TF Card
- Power Source: Battery Powered (1 Lithium Ion battery, included)
- Battery Capacity: 200mAh
- Charging Time: Approx. 2.5 hours
- Working Time: Up to 14 hours
- Wireless Range: Up to 33 feet (10 meters)
- Item Weight: 1.44 ounces
- Package Dimensions: 3.54 x 2.28 x 1.06 inches
9. Warranty and Support
KINDRM provides a 60-day refund policy for any quality issues. We also offer lifetime friendly technical support to ensure a worry-free buying experience. For assistance, please contact KINDRM customer service through your purchase platform or the official KINDRM website.