This sensor comes pre‑calibrated before we send it to you. Replace the sensor yourself in under 20 seconds — or send your unit to us and we’ll gladly do it for you.
All breathalyser sensors become less accurate over long periods of use. Just like a clock gradually drifts, a breathalyser sensor will eventually require recalibration.
Only quality alcohol breathalysers can be recalibrated. It is recommended to replace the sensor after approximately six months of regular use.
This replacement sensor includes full instructions so you can complete the swap yourself in seconds.

Comes with:
- Full instructions
- Calibration certificate
- Express postage
- New microfiber pouch




