BACtrack BT-C6
BACtrack C6 Keychain Breathalyzer User Manual
Model: BT-C6 | Brand: BACtrack
1. Introduction
The BACtrack C6 Keychain Breathalyzer is a professional-grade personal alcohol tester designed for accuracy and convenience. Utilizing BluFire Fuel Cell Sensor technology, it provides reliable Blood Alcohol Content (BAC) estimations. This device offers both standalone operation and optional wireless connectivity to the BACtrack App on your smartphone, enhancing your experience with features like ZeroLine technology and BAC tracking.

Figure 1: The BACtrack C6 Keychain Breathalyzer displaying a BAC reading.
2. Safety Guidelines and Important Information
For accurate and safe use, please observe the following:
- Do not operate machinery or drive a vehicle after consuming alcohol. The BACtrack C6 is an estimation tool and should not be used to determine if you are fit to drive.
- Always allow at least 15 minutes after your last drink or meal before testing. Residual alcohol in the mouth can lead to inaccurate readings.
- All breathalyzers, including BACtrack devices, require periodic recalibration to maintain accuracy. Refer to the Maintenance section for more information.
- Keep the device out of reach of children.
3. Package Contents
Verify that all items are present in your BACtrack C6 package:
- 1 x BACtrack C6 Keychain Breathalyzer
- 3 x Breathalyzer Mouthpieces
- 1 x AAA Battery (included)

Figure 2: What's included in the BACtrack C6 package.
4. Getting Started (Setup)
4.1. Battery Installation
- Locate the battery compartment on the back of the device.
- Slide the battery cover open.
- Insert the included AAA battery, ensuring correct polarity (+/-).
- Close the battery cover securely.
4.2. Downloading the BACtrack App
For full functionality and smartphone connectivity, download the free BACtrack App:
- For Apple iPhone users, search for "BACtrack" in the Apple App Store.
- For Google & Samsung Android device users, search for "BACtrack" in the Google Play Store.
4.3. Pairing the Device (App Mode)
To use your BACtrack C6 with the smartphone app:
- Ensure Bluetooth is enabled on your smartphone.
- Open the BACtrack App.
- Turn on your BACtrack C6. The device will automatically attempt to connect to the app.
- Follow the on-screen prompts in the app to complete the pairing process.
5. Operating Your BACtrack C6
The BACtrack C6 offers two modes of operation: Standalone Mode and App Mode.
5.1. Standalone Mode
In Standalone Mode, your BAC results are displayed directly on the C6's screen without requiring a smartphone connection.
- Press the power button to turn on the device.
- Wait for the device to warm up and display "BLOW".
- Follow the proper testing technique (see Section 5.3).
- Your BAC result will be displayed on the device screen.
5.2. App Mode
In App Mode, your BAC results are wirelessly transmitted to the BACtrack App on your smartphone, unlocking additional features.
- Ensure your BACtrack C6 is paired with the app (see Section 4.3).
- Open the BACtrack App on your smartphone.
- Press the power button on the C6 to turn it on. It will connect to the app.
- Follow the on-screen instructions in the app and the device prompts.
- Follow the proper testing technique (see Section 5.3).
- Your BAC result will be displayed in the app, along with other insights.
Key App Features:
- ZeroLine Technology: Estimates the time until your BAC is 0.00%. This feature helps you understand how long it takes for alcohol to leave your system.
- Guess Your BAC: Compare your perception of your BAC to the actual reading, helping you learn your limits.
- Track Your Drinking: Review past test results to understand how alcohol affects your body under different circumstances.
- Call an Uber: For your safety, the app provides a direct link to call an Uber if your BAC is above 0.00%.

Figure 3: The BACtrack App displaying ZeroLine technology and historical BAC data.
5.3. Proper Testing Technique
For accurate results, proper blowing technique is essential:
- Attach a clean mouthpiece to the device.
- When the device displays "BLOW" (or the app prompts you), take a deep breath.
- Blow steadily and continuously into the mouthpiece for approximately 5 seconds until the device beeps or indicates completion. Do not stop blowing prematurely.
- Wait for your result to be displayed.

Figure 4: Demonstrating the correct way to blow into the BACtrack C6 for an accurate reading.
6. Maintenance and Calibration
6.1. Cleaning
- Wipe the exterior of the device with a soft, damp cloth.
- Do not use abrasive cleaners or immerse the device in water.
- Mouthpieces should be replaced regularly, especially if shared.
6.2. Recalibration
Over time, all breathalyzers require recalibration to maintain accuracy. BACtrack recommends recalibrating your C6 every 6-12 months, or after approximately 200-300 tests, whichever comes first. Information on how to arrange recalibration services can be found on the official BACtrack website or by contacting customer support.
7. Troubleshooting
If you encounter issues with your BACtrack C6, try the following solutions:
| Problem | Possible Solution |
|---|---|
| Device does not turn on. | Check battery installation. Replace with a fresh AAA battery. |
| Inaccurate or inconsistent readings. | Ensure 15 minutes have passed since last drink/meal. Use proper blowing technique. Device may require recalibration. |
| Cannot connect to smartphone app. | Ensure Bluetooth is on. Restart both the device and the app. Try re-pairing the device in the app settings. |
| "FLOW" or "LOW BATTERY" error. | "FLOW" indicates insufficient breath sample; blow longer and stronger. "LOW BATTERY" means the battery needs replacement. |
8. Product Specifications
| Feature | Detail |
|---|---|
| Sensor Technology | BluFire Fuel Cell Sensor |
| Dimensions (L x W x H) | 2.21 x 0.66 x 1.88 inches |
| Weight | 2.08 ounces |
| Battery Type | 1 x AAA battery |
| Connectivity | Bluetooth (for App Mode) |
| Compatibility | Apple iPhone, Google & Samsung Android Devices |
9. Warranty Information
The BACtrack C6 Keychain Breathalyzer comes with a ONE-YEAR WARRANTY. If your BACtrack C6 ceases to function properly during the first year of operation due to a manufacturing defect, BACtrack will repair or replace the defective product. This warranty does not cover damage caused by misuse, accidents, or unauthorized repairs. Please retain your proof of purchase for warranty claims.
10. Customer Support
For further assistance, technical support, or recalibration services, please visit the official BACtrack website or contact their customer support team:
- Website: www.BACtrack.com
- Refer to the website for contact details and FAQs.
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