We are very pleased to inform you that after successfully passing the tests at METAS (CH), we have received approval for the calibration of our RTM 1688-2, Radon/Thoron monitor with the number CH-I-23498-00 in Switzerland. This means that after an additional calibration in Switzerland, our RTM 1688-2 is suitable for all official radon measurements and the measurement results should be accepted by the authorities. Of course, the device comes with a calibration certificate from our calibration laboratory, which has been accredited according to ISO 17025 since December 2021. If you are interested in it or have further questions, please contact our representative in Switzerland - company Econs Technology AG from Suhr, or contact us directly.