Campbell Scientific offers their EE181 air-temperature and relative-humidity (RH) probe. It is a solution for low-power, unattended applications requiring outstanding long-term stability and reliability. The EE181 features a steel-mesh filter and a proprietary coating on the RH element, which increases the life of the element and protects it from dirt, dust, salt, or other contaminants. Results from ongoing worldwide field testing confirm this research-grade instrument is ready for deployment in harsh environments. The EE181 is compatible with all Campbell Scientific dataloggers, including the new CR300 series.
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