The RH300 Series has been discontinued and has been replaced by the HSOS Series.
The RH300 series uses a highly accurate and reliable Thermoset Polymer based capacitance humidity sensor together with state-of-the-art digital linearization and temperature compensated circuitry to monitor humidity levels. The sensor is encapsulated in vented probe that provides protection from rain, wind and direct sunlight. A hinged, gasketed weatherproof ABS enclosure provides easy of installation and protection from the elements. Optional temperature sensing is available.