Digital In/out Max/Min thermometer and Hygrometer with probe.

This hygro-thermometer simultaneously displays both the humidity and temperature in addition to indicating and recording the maximum and minimum readings. The instrument measures both humidity and temperature over the range of -20 to +70°C and 20 to 99% RH utilising the internal sensors. Utilising the external temperature sensor the temperature range is extended to -50 to +70°C. Please note - this is not suitable for very high humidity enviroments (eg inside terrariums). Use a bimetal hygrometer for this.