Due to its large temperature range the ambient temperature sensor is suited for measuring outside temperature as well as room temperature.
Sensor PT1000 Measuring range -40°C to +180°C; -40 F to 356 F
Fronius Art. Nr. 43,0001,1188
Mounting tip: For this sensor, there is no special mounting construction. The ambient temperature sensor can e.g. simply be placed under the pv-modules.