Sobermate S5 Marketplace only it has an alert after

it has an alert after 500 tests so you'll be reminded when the device requires calibration

Comprehensive Detection: Efficiently identifies AMP

HEPA filter and Carbon filter

Sensor type: Semiconductor sensor

protective case

Sobermate S5 Marketplace only it has an alert afterThe Sobermate S5 breathalyser provides accurate and reliable alcohol test results with the press of a button. Perfect for avid travellers, the S5 can read in both BAC and BrAC readings, so you can bring it on your travels and ensure you're always below the legal limit in the country you're visiting. Plus, you can recall the last 10 test results on the breathalyser with the click of a button. With its convenient calibration reminder, you can always