Weather stations are another application in which the sensors may be used to provide precise relative humidity and temperature measurement, both in ground-based and airborne weather stations. A benefit in the application is that it allows real time and highly accurate monitoring and reporting of actual weather conditions. Also, the HumidIcon sensors in telecommunications cabinets to provide precise relative humidity and temperature measurement for the HVAC system, maintaining proper temperature and humidity levels in the cabinet. This provides maximum system uptime and performance.