A keychain tester for the occasional night out and a handheld a sober living house uses every morning solve different problems, so this ranking starts with the use and then picks the model whose sensor, stated accuracy and calibration route fit it. Every figure comes from the manufacturer's published specifications and public documentation. The method is on our how we review breathalyzers page.
BACtrack S80, a Pro Grade fuel cell handheld with a published tolerance and a yearly send-in calibration route.
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BACtrack Trace Pro, Pro Grade fuel cell parts and a published tolerance in a pocket sized body.
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BACtrack Mobile, sold earlier as the Mobile Pro, a pumped fuel cell unit that logs results in the app.
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BACtrack C6, one of the few keychain testers built on a fuel cell.
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AlcoMate Revo, whose owner swaps a precalibrated sensor module instead of mailing the unit away.
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BACtrack Go, a small semiconductor keychain unit for rough checks.
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Where a maker gives no number, the cell says so.
| Model | Sensor | Stated accuracy | Calibration | Best for |
|---|---|---|---|---|
| BACtrack S80 | Fuel cell, Pro Grade | +/- 0.005 at 0.100% BAC | Send-in service, yearly suggested | Personal use where the number matters |
| BACtrack Trace Pro | Fuel cell, Pro Grade | +/- 0.005 at 0.050% BAC | Send-in service, yearly suggested | Pocket carry |
| BACtrack Mobile | Fuel cell with breath pump | +/- 0.005 at 0.050% BAC | Send-in service, every 6 to 12 months | App history |
| BACtrack C8 | Fuel cell | Not published by the maker | Send-in service, interval not published | Phone pairing with a built in display |
| BACtrack C6 | Fuel cell | Not published by the maker | Send-in service, interval not published | Keychain carry |
| BACtrack Go | Semiconductor | Not published by the maker | Send-in service, every 6 to 12 months | Occasional rough checks |
| AlcoMate Revo | Fuel cell, replaceable module | +/- 0.005 at 0.10% BAC | Owner swaps module, 1,000 tests or yearly | Frequent use, many users |
Figures are the maker's published specifications.
A tolerance quoted at 0.050 and one quoted at 0.100 are not the same claim, as our most accurate breathalyzer ranking explains.
Who it suits: an adult who wants one dependable handheld, and parents who need a number they can trust.
What to know: no app, no memory, and two different sets of dimensions on maker pages. BACtrack says it meets DOT and NHTSA requirements for a personal screening device, which we have not matched to the current NHTSA list. See the BACtrack S80 review.
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Who it suits: people who keep a tester in a jacket or glovebox, and small teams sharing one unit.
What to know: no Bluetooth, no stored results, unpublished display resolution, and maker pages differ on AA or AAA batteries. Read the BACtrack Trace professional breathalyzer review.
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BACtrack now sells this unit as the Mobile (BT-M5), while the box list still says Mobile Pro. A small pump draws breath across the sensor.
Who it suits: anyone who wants a log of readings and keeps a phone at hand.
What to know: no phone means no result, the rechargeable battery is not replaceable, and the maker asks for a blow at least monthly to keep the sensor from drying out. More in the BACtrack Mobile Pro review.
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Both use the BluFire fuel cell. The C8 is a small handheld with its own display; the C6 hangs on a keychain and works in Standalone Mode or App Mode.
Who it suits: buyers who want fuel cell chemistry in a small package.
What to know: without a published tolerance they rank below the S80, Trace Pro and Mobile. Compare the BACtrack C8 review and the BACtrack C6 review.
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Its PRISM sensor module arrives calibrated from the factory, and the owner replaces it rather than shipping the device in.
Who it suits: employers, rehab programs and households that test daily.
What to know: professional price band plus a recurring module cost, module types depend on purchase date, and warm-up and result times are not published by the maker. Its DOT approval claim could not be matched to an NHTSA list entry. See the AlcoMate Revo review.
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Who it suits: someone who tests a few times a year and wants a rough indication.
What to know: semiconductor sensors drift faster and can react to other substances, and one battery lasts roughly 50 to 75 tests. Our keychain breathalyzer page sets it beside the C6; full notes in the BACtrack Go keychain breathalyzer review.
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The Draeger Alcotest 5820 is marked for law enforcement purposes only in the US and shown as end of sales on maker pages, so our draeger breathalyzer review carries no shopping link. The AlcoHAWK Pro is an older semiconductor model with documentation from 2005 and no maker site today; the AlcoHAWK Pro review points to current alternatives.
Start with the sensor. If you will act on the number, a fuel cell is the sensible floor, because it reacts specifically to alcohol and holds calibration longer. Our fuel cell vs semiconductor breathalyzer page covers the chemistry.
Next, look for a published tolerance at a named BAC level. Wording like "professional grade accuracy" gives you nothing to check.
Then weigh the calibration path: send-in service means days without the device, a swappable module costs more per change but skips shipping. Our guide to calibrating a breathalyzer compares them.
The breathalyzer finder narrows it down.
The BACtrack S80, Trace Pro and Mobile publish the tightest tolerance among consumer models here, +/- 0.005, each at the reference level its maker names.
For anyone who will act on the reading, yes, because a fuel cell is alcohol specific and drifts less than a semiconductor sensor.
A fuel cell keychain such as the C6 is a reasonable personal check, while a semiconductor keychain such as the Go gives only a rough indication.
Amazon prices change often, so we describe price bands in words and the button opens the current listing.
No, personal units are screening devices, and legal evidence comes from evidential instruments used under a formal procedure.
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