Three randomized selected instruments of the Radon Scout Home were calibrated (DKD) by the German "Bundesamt für Strahlenschutz” (Federal Office for Radiation Protection). The variation from the reference value was 1% for two instruments and 2% for the third one. No individual calibration procedure was applied for the units before the test. This shows the high accuracy as well as the very good reproducibility of the measured results. Furthermore, the practically not present background is noteworthy, resulting in exact measurements even at low Radon concentrations. The calibration certificates are available on the Radon Scout Home product page under "certification”.