Nobody likes having to send their breathalyzer in for calibration every 12 months – but how else could you continue to trust the accuracy of your breathalyser? With our Swap & Go range of personal digital breathalysers, you can have that confidence without having to send it away to have it calibrated. The AL7000’s replaceable sensor should remain accurate for 12 months (or 300 tests), you can then purchase a brand new sensor and replace it yourself – just like a battery.