The new Oxyscan 100 Pro A is a measuring unit for checking the share of Oxygen in gas mixtures. It is a further development of the Oxyscan 100 Pro. - activation through water contacts - automatically calibration after switching on - visual display of battery capacity in % - visual display of sensor voltage in mV before calibration - accoustic an visual warning in case of low or high ppO2 (low: 0.4 bar, high: 1.3 bar) - pressure density to 100 metres - can be mounted to optional console (single or double) - can furthermore worn at the right or the left arm