This product is no longer available. Some accessories, replacement parts, or services may still be available.

Image Not Available


The 201 temperature and RH probe (pn 2015) was developed for use with our long-retired CR21 Microloggers. It consisted of a thermistor for measuring temperature and a Phys-Chemical Research Corp PCRC-11 chip for measuring relative humidity. The probe was particularly susceptible to sulfur and oil gases or compounds, including tobacco smoke.

Privacy Policy Update

We've updated our privacy policy.  Learn More