Product details
Alcohol breath tester keychain – digital breathalyzer for on-the-go checks
Handy, small and sensible — this keychain breathalyser makes it dead easy to check your blood alcohol concentration (BAC) before deciding to drive or grab a taxi. It’s one of those gadgets that takes the awkward guesswork out of a night out. Slip it on your keys, pop it in a pocket or handbag, and you’ve got a quick, straightforward check whenever you need one.
Quick facts
The unit uses a semiconductor alcohol sensor that warms up in under 10 seconds and gives a reading within around 5 seconds. It detects 0.00–0.19% BAC (0.0–1.9 g/L), with results shown on a clear digital display. It’s featherlight — roughly 75 g — and runs on 2 x AAA alkaline batteries (not included). For air-transport safety, the product is shipped without batteries.
Features and benefits
- Portable keychain design means it’s always to hand when needed — no faffing about with bulky kit.
- High-precision semiconductor sensor delivers fast, repeatable readings so your decisions are clearer and safer.
- Clear digital display makes results easy to read at a glance; auto power-off and a low-voltage indicator help preserve battery life.
- Quick warm-up and response times get you an answer in seconds — handy after a few drinks or before getting behind the wheel.
- Compact and robust for everyday carry; great for personal use, events, staff safety checks or bulk resale.
How to use and handy tips
For a reliable result, wait about 20 minutes after drinking before testing — alcohol takes time to absorb and residual mouth alcohol can skew the reading. Allow at least three minutes between tests so the unit can reset. Avoid cleaning the sensor with solvents (benzene, petrol, thinners) and don’t let liquids get into the sensor area. If you get a very low or borderline result, play it safe and consider not driving — better safe than sorry.
Technical specifications
- Sensor: semiconductor alcohol sensor.
- Warm-up time: within 10 seconds.
- Response time: within 5 seconds.
- Operating temperature: 5–40 °C.
- Detection range: 0.00–0.19% BAC / 0.0–1.9 g/L.
- Display: digital (no backlight).
- Power: 2 x AAA alkaline batteries (not included) — shipped without batteries.
- Other: auto power-off, low-voltage indicator, quick response and reset.
This breathalyser is a practical, cost-effective way to get a quick sobriety check before driving or operating machinery. It’s not a substitute for professional or police-grade testing, but it does give you a sensible indication of whether to call a cab or head home. If you’re ever in doubt about the accuracy or a reading, err on the side of caution — safety first.





