The sensor has the same shape for all the measurement configurations (only air temperature, only relative humidity, both of them).
Temperature is measured with a platinum thermistor Pt100 1/3DIN (100Ω@0°C) sensible to temperature
variations in accordance to the response curve described in DIN 43760 norms. Pt100 resistance measure is converted, through 4-wire connection, in an electrical signal normalized in current or voltage, linearly variable with temperature.