The Model 485 Digital Hygrometer is a versatile, , battery-operated humidity and air temperature measurement system. The instrument will directly measure temperature, in either °C or °F, and percent relative humidity. The 485 will also calculate the dew point temperature and the wet bulb temperature based on the relative humidity and temperature readings. MIN and MAX functions are provided to save minimum and maximum temperature and relative humidity readings. The reading may also be frozen using the HOLD function. In addition, a memory function is provided which will hold up to 25 humidity and temperature samples.

Relative Humidity Measurement Range: 0-100% : ;2% : 0.1% Sensor Operating Temperature: -22° to 185°F ( -30° to 85°C)

Temperature Measurement Range: -22° to 185°F (-30° to 85°C)

: ;1°F (0.5°C)

: 0.1°

Ambient Temperature Operating Range 32° to 104°F (0° to 40°C)

Storage Temperature Limits -40° to 176°F (-40° to 80°C)

Power Source 9 Volt Alkaline Battery