Bb sensors hytelog usb series humiditytemperature probes with usb interface bb sensors hytelog usb set1 this plastic bodied probe will measure both relative humidity and temperature and directly interface with a pc via a usb connector the temperature sensor is of the ntc type and humidity sensing is carried out by a long term capacitive polymer sensor a microcontroller integrated into the probe corrects any linearity errors and temperature drift and an applied compensation method guar