The reading of the dry and wet wood temperature and outside temperature is taken with RTD Pt-100 3 drivers Class A type sensors. This kind of probe allows precision at 0.06% what allows a better precision for dry kiln application. This kind of probes is standard in CANADA & US with a very goog availability. The cable used between the probes and the junction box will be covered up with silicone and resistant to a temperature of 200oC (392oF). Two (2) dry temperature sensors and one (1) wet temperature sensor will be installed by drying zone and/or by kiln according to the case.