Extech's RH35 monitors Humidity, Temperature, and Dew Point for the previous 24 hours and alerts users to indoor mold hazard conditions starting with a frown icon warning when humidity reaches 60%RH. When the RH exceeds 65%, a loud audible alarm and bright flashing red LED will be triggered. The frown icon will also appear if the environment is too dry (<40%RH) where static electricity becomes a concern.
Lutron BHM-382SD is a SD-card real time data logger with internal sensors for humidity, temperature and atmospheric pressure (barometer). All values are shown on the large display. The logger is perfect for many different applications like office environment or temperature controlled transportation or clean rooms.
The Extech RH520B is a paperless chart recorder that provides simultaneous digital and graphical display of %RH and temperature or dew point, as well as showing date/time and min/max values.