Manufacturer | BACtrack |
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Place of Business | SAN FRANCISCO, CA, 94133 US |
Item model number | BT-P3 |
Product Dimensions | 10.8 x 4.75 x 1.59 cm; 86.18 g |
ASIN | B00R2X59A4 |
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BACtrack Trace Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use
Purchase options and add-ons
- PRO-GRADE ACCURACY - Powered by BACtrack's platinum-based Xtend Fuel Cell Sensor, the Trace utilizes the same professional-grade technology trusted by hospitals, clinics, and even law enforcement.
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Product description
Powered by BACtrack's state-of-the-art Xtend Platinum Fuel Cell Sensor technology, the BACtrack Trace Professional Breathalyzer delivers reliable and accurate BAC results, with police-grade accuracy. From being used as an alcohol detector for employees in businesses to acting as an alcohol tester for patients in clinics or treatment centers, the Trace is perfect for a variety of professional alcohol sensing, detecting and testing applications. And because of its small size and portable design, it's also works great as a personal BAC breathalyzer. Help friends and family make better decisions while drinking with the accurate and affordable BACtrack Trace alcohol breathalyzer.
From the manufacturer


The Leader in Breathalyzers
BACtrack, the brand of breathalyzers, with over 14 years of experience in the industry, provides the most accurate, convenient and affordable breath alcohol testing devices on the market.
With its personal, professional and smartphone breathalyzers being sold in more than 20,000 retail stores in North America and in over 25 countries worldwide, BACtrack truly is the leader in breathalyzers.
BACtrack Trace Professional Breathalyzer
Compact, Accurate & Affordable!
The easiest way to get an accurate BAC reading in seconds, the new BACtrack Trace Professional Breathalyzer is perfect for every alcohol sensing application. This slim, stylish device is easy to use and utilizes BACtrack's award winning, state of the art, 2015 sensor technology. Equipped with BACtrack's police-grade Xtend Fuel Cell Sensor Technology, the Trace delivers the very highest accuracy and consistency, enabling you to make smarter decisions while drinking.
- Xtend Fuel Cell Sensor Technology - The same technology trusted by hospitals, clinics, and law enforcement
- Built In Memory - This convenient and practical test flashback memory saves the last 10 BAC readings for later reference
- Advanced Features - Including continuous temperature checking, user-adjustable warning levels, and an internal mini-solenoid breath pump system
- One Touch Operation - Simply power on your BACtrack Trace and begin testing in seconds

Why choose a BACtrack Professional Series Breathalyzer?
Police-Grade Accuracy, Every Time You Test
All BACtrack Professional Series breathalyzers employ BACtrack's proprietary police-grade Xtend Fuel Cell Sensor Technology and are ideal for applications that demand the most accurate results, such as clinical or roadside alcohol testing or personal BAC monitoring.
Precise, Consistent BAC Results
The linear response of BACtrack's Xtend Fuel Cell Sensor delivers precise results over the complete range of alcohol concentrations expected in the breath, from 0.000 to 0.400 percent BAC and excels in instances where individuals are tested repeatedly in a short period of time
Long-Term Reliability
BACtrack's Xtend Fuel Cell Sensors have an extended sensor life (when compared with other traditional sensors), which allows BACtrack Pro Series breathalyzers to maintain their accuracy for up to thousands of tests, delivering long-term reliability you can trust.
Benefits of Xtend Fuel Cell Sensor Technology
- Police-Grade Accuracy
- Precise, Consistent BAC Results
- Long-Term Reliability
- Sensitive Enough for High BAC Testing
- Faster Warm Up Time
- Longer Battery Life
- No False Positives
BACtrack Trace Features
Simple, One-Touch Operation
The Trace is easy to use - insert the two AAA batteries that come with the product, and it's ready to test. When you press the start button, the BACtrack Trace counts down for approximately 10 seconds, preparing the system for a breath sample. When the countdown reaches zero, blow steadily and continuously for at least 5 seconds. If a sufficient breath sample has been taken, the user's estimated BAC is displayed on the screen.
Reliable Performance, Accurate Results
Despite its small size, the BACtrack Trace packs serious technology inside its black plastic casing. There is a miniature air pump inside the Trace that activates at the end of each breath sample. You can actually feel the 'click' during each test. This proprietary internal sampling system ensures that a precise breath sample enters the alcohol fuel cell sensor, and is one of the reasons why the Trace provides trusted, accurate results every test.
Test Yourself, Friends and Family
With it's easy to read LCD screen, extraordinary battery life and six extra included mouthpieces, BACtrack Trace is perfect for testing yourself as well as your friends and family. Take it with you wherever you go and gain peace of mind while keeping your loved ones safe with BACtrack.

The Military and Law Enforcement Trust BACtrack
Police Departments rely on BACtrack Breathalyzers as preliminary screening devices during DUI traffic stops to determine if someone is possibly intoxicated. They trust BACtrack because they know they are getting the most accurate BAC results possible.

Health Professionals Trust BACtrack
While blood testing is the most accurate way to determine BAC, this process is invasive, time consuming and requires trained professionals. With a BACtrack Breathalyzer, medical staff can quickly and easily estimate the BAC of their patients, in a fraction of the time.

Alcohol Treatment and Recovery Centers Trust BACtrack
Alcohol Treatment and Recovery Centers use BACtrack Breathalyzers to keep their patients accountable for their sobriety. They rely on BACtrack to provide accurate, consistent results on a daily basis to help keep their members on track, towards a healthy and sober recovery.

Individuals Trust BACtrack
Individuals seeking the highest degree of accuracy and consistency from their breathalyzer trust BACtrack to deliver accurate, reliable BAC results for themselves and their loved ones. They gain peace of mind knowing they're helping friends and family make better decisions while drinking.

Law Enforcement

Health Professionals

Alcohol Treatment Centers

Individuals
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Customer Reviews |
4.4 out of 5 stars 1,421
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3.5 out of 5 stars 42
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4.4 out of 5 stars 7,522
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4.5 out of 5 stars 1,682
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3.5 out of 5 stars 454
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3.7 out of 5 stars 5,940
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Ideal Use | Personal & Professional | Personal | Personal & Professional | Personal & Professional | Personal | Personal |
Sensor Type | Platinum Fuel Cell | Semiconductor | Platinum Fuel Cell | Platinum Fuel Cell | Semiconductor | Semiconductor |
Accuracy Rating | 10 - Most Accurate | 7 - Very Accurate | 10 - Most Accurate | 9 - Extremely Accurate | 7 - Very Accurate | 6 - Accurate |
LCD Screen | no data | no data | ✓ | ✓ | ✓ | ✓ |
Bluetooth Connectivity | ✓ | ✓ | no data | no data | no data | no data |
ZeroLine - Estimates time to 0.000% BAC | ✓ | ✓ | no data | no data | no data | no data |
Battery Type | Mini-USB Rechargeable Lithium Ion | 1 x AAA battery | 2 x AA batteries | 2 x AAA batteries | 2 x AAA batteries | 1 x AAA battery |
One Year Warranty | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Safety and product resources
Safety documents
Product information
Technical Details
Additional Information
鶹 Rank |
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Product details
- Batteries : 2 A batteries required. (included)
- Is discontinued by manufacturer : No
- Product Dimensions : 10.8 x 4.75 x 1.59 cm; 86.18 g
- Date First Available : Feb. 25 2015
- Manufacturer : BACtrack
- Place of Business : SAN FRANCISCO, CA, 94133 US
- ASIN : B00R2X59A4
- Item model number : BT-P3
- 鶹 Rank: #14,997 in Health & Personal Care (See Top 100 in Health & Personal Care)
- #14 in Alcohol Tests
- Customer Reviews:
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Customer reviews
Customers say
Customers like the effectiveness, ease of use, and quality of the product. They mention it does the job accurately every time, is easy to use, and has good value for money. Customers also appreciate the compact size. However, some customers have different opinions on the accuracy.
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Customers like the effectiveness of the product. They mention it works good, does the job accurately every time, and gives very consistent and reproducible results. Some say it's good to use if a friend wants to drive.
"Great product. Works great. Easy to use...." Read more
"The unit gives very consistent and reproducible results so I have a good feeling about it's accuracy...." Read more
"Works well. Tested it all day and gave consistantly results. Easy to use. Smaller the an avg smart phone. Recommend." Read more
"Great item Works good and fairly accurate" Read more
Customers find the product easy to use. They mention it's lightweight, seems precise, and the BAC breathalizer is great.
"Works well. Tested it all day and gave consistantly results. Easy to use. Smaller the an avg smart phone. Recommend." Read more
"...Nice and compact and easy to use. Arrived on time. Think it was a ok value. Will see how long it lasts" Read more
"Simple to use and works perfectly." Read more
"Great, easy to use BAC breathalizer...." Read more
Customers are satisfied with the quality of the product. They mention it's a reliable machine and compact.
"Great product. Works great. Easy to use...." Read more
"Good quality" Read more
"...Nice and compact and easy to use. Arrived on time. Think it was a ok value. Will see how long it lasts" Read more
"...Really well made and although I can't confirm absolute accuracy, the numbers I was getting were very close to BAC calculations...." Read more
Customers are satisfied with the value for money of the product. They mention it's a good buy and worth the money.
"Good product..." Read more
"Very good. Worth the money all day long" Read more
"...It was expensive but worth the money to know that it works." Read more
"...Nice and compact and easy to use. Arrived on time. Think it was a ok value. Will see how long it lasts" Read more
Customers like the compact size of the product.
"Works well. Nice compact size." Read more
"...Nice and compact and easy to use. Arrived on time. Think it was a ok value. Will see how long it lasts" Read more
"...So I bought one. This unit is so small that it fit in a pocket. It provide very constant results, accuracy is excellent...." Read more
"...Easy to use. Smaller the an avg smart phone. Recommend." Read more
Customers have mixed opinions about the accuracy of the product. Some mention it seems fairly accurate and gives very consistent and reproducible results. However, some customers have reported that accuracy dropped within 20 readings and every reading was different to the extreme.
"The unit gives very consistent and reproducible results so I have a good feeling about it's accuracy...." Read more
"...results were all over the place and I even had one that read insanely high for no reason...." Read more
"Accurate product" Read more
"...It provide very constant results, accuracy is excellent. I need my car for my work and a few times I was too close to the limit...." Read more
Reviews with images

BacTrack
Top reviews from Canada
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Reviewed in Canada on July 8, 2025Verified PurchaseVa très bien, petit et pratique
- Reviewed in Canada on March 10, 2024Verified PurchaseBought this because I had always heard the "the legal limit is 0.08" line, but that really means nothing if you've never had your BAC tested ever in your life.
At first, the results were all over the place and I even had one that read insanely high for no reason. But then I realized I had still been drinking my drink 2 minutes previous and the instructions say to wait 20 minutes after eating and drinking before testing.
After that I finished my drinks and waited at least 20+ minutes before testing and did 3 tests in a row - they read 0.04, 0.039, and 0.039. Probably 25 minutes after that I did another test and got 0.038. These results seemed very consistent, so just make sure you actually follow the "no food or drinks for 20 minutes" rule if you want accurate readings.
I'm guessing a lot of the more negative reviews on this thing are from people who were not following the directions, because at first I was like "what the ... why is each reading so different" until I started using it correctly.
- Reviewed in Canada on February 18, 2025Verified PurchaseAfter reading carefully the user manual on line ,I discovered that my problem was the use of the wrong type of battery. This unit absolutely requires ALKALINE batteries to function properly.
Thank you BACtrack for the speedy offer to refund. It won't be necessary now. My apologies.
- Reviewed in Canada on December 19, 2016Verified PurchaseThe unit gives very consistent and reproducible results so I have a good feeling about it's accuracy. Of course, there is no way to say what the absolute accuracy of a reading is short of taking it to the police station, but at least the readings are very consistent. The unit can't be used in court and they do say it should be recalibrated every 6 months. But of course I don't plan to do that since it would need to go to California.
I kept getting the FLO error until I realized that you don't need to blow hard, but you do need to blow for the full 5 seconds until you hear the unit go "clunk". After I discovered this procedure, no more FLO errors.
I contacted their customer service to find out if the third smaller digit is the thousandth in the reading. It is the thousandth so the 3 in 0.023 but since the accuracy is quoted as plus/minus 0.005 they make the display smaller for the thousandth digit.
All in all, I am pleased with the unit as I have heard a lot of tales about cheap junk being sold to read BAC. It was expensive but worth the money to know that it works.
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Reviewed in Canada on September 1, 2024Verified PurchaseJe voulais depuis longtemps acheter ceci, car souvent on pense qu'on est ''CORRECT'' pour conduire...
Alors, j'ai fait des analyses aujourd'hui. J'ai bu de l'alcool, dès que je me suis senti un peu wout wout...j'ai fait le test. OUPELAY...avant j'aurais pris ma voiture....mais ooohhhh que non, je dépassais la limite permise.
J'ai ensuite cessé la prise d'alcool, je n'ai pas mangé, je n'ai bu que de l'eau et environ 30 minutes plus tard j'ai refais le test et c'était plus convenable. Je pourrais dire, que 30 minutes plus tard. TOUT était OK pour conduire ma voiture.
Excellent produit
- Reviewed in Canada on October 23, 2022Verified PurchaseI never post reviews but was sceptical with this small alcohol screening device compaired to the ones we use in our police force. I did test it with an alcohol standard (same procedure for the police screening devices as I am qualified to calibrate the alco-sensor FST). At see level it is 82mg% but at the moment/location I tested it, the target was 83mg% so 0.083. First test came back exacly 0.083. I was really impressed. These little things are temeperature sensitive. Don't leave it in your car if it is too hot or cold as it could damage the fuel cell like any other alcohol devices. I'll try to test it in few months to see how it can stay accurate. Of course, this is only for personnal usage anyway so even if it is of by 5mg%, it's not that of a big deal. Just remember that you need to wait 15 mins after consomption before testing. And your alcohol level should still continue to rise if you only stopped drinking 15 mins ago...
I never post reviews but was sceptical with this small alcohol screening device compaired to the ones we use in our police force. I did test it with an alcohol standard (same procedure for the police screening devices as I am qualified to calibrate the alco-sensor FST). At see level it is 82mg% but at the moment/location I tested it, the target was 83mg% so 0.083. First test came back exacly 0.083. I was really impressed. These little things are temeperature sensitive. Don't leave it in your car if it is too hot or cold as it could damage the fuel cell like any other alcohol devices. I'll try to test it in few months to see how it can stay accurate. Of course, this is only for personnal usage anyway so even if it is of by 5mg%, it's not that of a big deal. Just remember that you need to wait 15 mins after consomption before testing. And your alcohol level should still continue to rise if you only stopped drinking 15 mins ago...
Images in this review
- Reviewed in Canada on January 31, 2023Verified PurchaseI had the product for a week and the product started to give 0.00 alcohol readings despite having a few drinks.
I tried returning the item only to find out that 鶹 lists it as a non-returnable personal use item. This is not disclosed in their return policy or the item description.
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Reviewed in Canada on July 28, 2024Verified PurchaseJe l'ai acheté au cas que... Je m'en suis servi quelques fois à date, question d'être certaine de pouvoir prendre la route en toute sécurité. Ou juste pour savoir qui des deux va conduire.👌
Top reviews from other countries
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Sas MontegrossoReviewed in France on October 30, 2024
1.0 out of 5 stars Mise pas de mode d’emploi en français en fonction
Verified PurchaseBonjour, le mode d’Emploi n’est pas en français
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Davide D.Reviewed in Italy on January 2, 2025
5.0 out of 5 stars Sembra molto utile.
Verified PurchaseFunziona bene e le misurazioni sono sovrapponibili nel breve tempo. La conversione da BAC in grammi per litro di sangue (parametro valutato per la legge italiana) si fa semplicemente moltiplicando X10 il valore ottenuto, ad esempio se il valore BAC è 0,05 in grammi/litro sarà 0,5 , valore limite per la legge in Italia. Spero solo che i valori rilevati siano precisi. Questa sera ho bevuto vino in libertà a tavola e a fine pasto un super alcolico da 40 gradi . Dopo 20 minuti circa il tasso alcolemico rilevato più volte era 0,35 gr/l. Spero fosse giusto! ( non dovevo comunque guidare io).
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Navegante FenicioReviewed in Mexico on July 26, 2023
5.0 out of 5 stars FACIL DE USAR
Verified PurchaseCUMPLE BIEN CON SU PROPOSITO Y TIENE BUEN PRECIO
- R. J. HarriesReviewed in the United Kingdom on May 31, 2025
5.0 out of 5 stars Compact, well designed and accurate
Verified PurchaseThis arrived well packaged in a branded cardboard box. It is compact and well designed. Set up is simple and easy. Just follow the instructions and leave at least 20 minutes before testing. I found that the results were very consistent. Handy little gadget. High price point but that is reflected in the quality, design and accuracy of the product.
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