Extech HW30, multi-function stopwatch. Displays a digital up/down timer, temperature, humidity and heat index. Additional features include a 12/24-hour clock, stopwatch, 30 lap/split memory and programmable alarm.
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.