Product Overview
The DS18 BTTWO is a compact and robust Bluetooth audio receiver designed for seamless integration into various audio systems, including automotive, marine, and powersports applications. It features an IP65 waterproof rating, Bluetooth 4.0 connectivity for high-quality audio streaming, and a remote trigger output for amplifier control. Its low current draw and inline fuse protection ensure reliable and safe operation.

Image: The DS18 BTTWO Bluetooth Receiver, showcasing its compact red housing, attached RCA audio output cables (red and white), and power/remote wiring (red, black, blue, yellow) with an inline fuse.
Key Features
- BT 4.0 Superior Connectivity: Enjoy higher sound quality, faster speeds, and an extensive range of up to 150 feet for seamless wireless audio streaming.
- Robust Waterproof Design (IP65 Rated): Engineered to withstand harsh environments, making it ideal for diverse applications including automotive, marine, and powersports.
- Versatile Audio Connectivity: Features 2-channel RCA output and a remote trigger output for seamless integration with amplifiers and audio setups.
- Enhanced Safety Features: Equipped with in-line fuse protection to safeguard against power surges and voltage irregularities.
- Universal Compatibility: Seamlessly integrates with Android or iPhone devices through advanced BT A2DP technology for crystal-clear sound reproduction.

Image: A close-up of the DS18 BTTWO unit, highlighting its core features: Bluetooth 4.0, IP65 waterproof rating, and stereo male RCA outputs.
What's in the Box
- DS18 BTTWO Bluetooth Audio Receiver with integrated cables
Setup and Installation
Proper installation is crucial for optimal performance and longevity of your DS18 BTTWO Bluetooth Receiver. It is recommended to have this unit installed by a qualified professional, especially in complex audio systems.
Wiring Diagram

Image: A detailed wiring diagram illustrating how to connect the DS18 BT-TWO. It shows the red wire connecting to 12V, the yellow wire to an accessory switch, the black wire to ground, the blue wire as a remote output to an amplifier, and the RCA cables connecting to the amplifier's input.
Connection Instructions
- Power Connection:
- Connect the RED wire to a constant +12V power source (e.g., battery positive terminal). Ensure an inline fuse is used for protection.
- Connect the YELLOW wire to a +12V switched accessory power source (e.g., ignition switch or accessory circuit). This will turn the unit on/off with your vehicle's power.
- Connect the BLACK wire to a reliable chassis ground point.
- Remote Output:
- Connect the BLUE wire (Remote Out) to the remote turn-on input of your amplifier. This wire provides a +12V signal to turn on the amplifier when the BTTWO unit is powered on.
- Audio Output:
- Connect the RED RCA cable to the Right audio input of your amplifier.
- Connect the WHITE RCA cable to the Left audio input of your amplifier.
- Mounting: Secure the BTTWO unit in a suitable location, ensuring it is protected from excessive heat and physical damage. The IP65 rating allows for exposure to water splashes, but direct submersion is not recommended.
Operating Instructions
Bluetooth Pairing
The DS18 BTTWO is designed for simple "Connect & Play" integration. Once the unit is powered on, it will automatically enter pairing mode or attempt to reconnect to the last paired device.
- Ensure the DS18 BTTWO unit is powered on (vehicle ignition/accessory is on).
- On your mobile device (smartphone, tablet, etc.), navigate to the Bluetooth settings.
- Scan for available Bluetooth devices. You should see "DS18 BTTWO" or a similar name appear in the list.
- Select "DS18 BTTWO" to initiate the pairing process. No password is typically required.
- Once paired, your device will indicate a successful connection, and audio will be routed through the BTTWO to your connected amplifier/speakers.
Audio Playback
After successful pairing, simply play audio from your connected device. The volume will be controlled directly from your mobile device.

Image: The DS18 BTTWO unit emphasizing its compatibility with both iOS and Android devices, facilitating easy "Connect & Play" audio integration via Bluetooth A2DP.
Maintenance
The DS18 BTTWO is designed for durability and requires minimal maintenance.
- Cleaning: Use a soft, damp cloth to clean the exterior of the unit. Avoid harsh chemicals or abrasive cleaners.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Fuse: The inline fuse protects the unit from power surges. If the unit stops functioning, check and replace the fuse if necessary. Always replace with a fuse of the same rating.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit. | Loose power connections, blown fuse, no accessory power. | Check red, yellow, and black wire connections. Inspect and replace inline fuse if blown. Ensure accessory power is active. |
| Cannot pair with Bluetooth device. | Unit not in pairing mode, device too far, interference, previously paired device connected. | Ensure unit is powered on. Move device closer. Turn off Bluetooth on other nearby devices. Forget "DS18 BTTWO" on your device and try pairing again. |
| No audio output. | Loose RCA connections, amplifier not turning on, volume too low on device. | Check RCA cable connections to amplifier. Verify amplifier is receiving remote turn-on signal (blue wire). Increase volume on your mobile device. |
| Poor audio quality / Static. | Poor grounding, interference, damaged RCA cables. | Ensure black ground wire has a solid connection. Reroute audio cables away from power cables if possible. Inspect RCA cables for damage. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | BT-TWO |
| Product Dimensions | 3 x 1.5 x 1.8 inches (7.62 x 3.81 x 4.57 cm) |
| Item Weight | 3.68 ounces (104.33 grams) |
| Connectivity Technology | Bluetooth 4.0 |
| Waterproof Rating | IP65 |
| Audio Output Mode | Stereo (2 Channel) |
| Output Type | Male RCA |
| Special Feature | Built-In Bluetooth, Remote Trigger Output, Inline Fuse Protection |
| Compatible Devices | Smartphone (Android, iOS) |
| Low Current Draw | 20mA |
Warranty and Support
For warranty information and technical support, please contact DS18 directly or refer to their official website. Keep your proof of purchase for any warranty claims.
Manufacturer: DS18Sound
Brand: DS18
For further assistance, visit the official DS18 Store on Amazon.





