The Extech RH300 Digital Psychrometer measures humidity, temperature, dew point, and wet bulb readings. It features a unique sensor cap design that twists to open or close for protection during storage and allows for switchable °F/°C temperature units with 0.1° resolution.
The device includes Max/Min readings, a data hold function, and auto power off to save battery life. It is supplied with two AAA batteries and can be ordered with optional accessories such as the TP890 external temperature probe or the RH305 kit.
| Humidity Range | 10 to 90%RH |
|---|---|
| Internal Temperature Range | -4 to 122°F (-20 to 50°C) |
| External Temperature Range | -4 to 158°F (-20 to 70°C) |
| Dimensions | 7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm) |
| Weight | 3.3oz (95g) |
The humidity range is 10 to 90%RH.
Yes, it can measure external temperature using an optional external temperature probe (TP890).
The temperature resolution is 0.1°.