Displays current relative humidity and temperature readings, and automatically logs air temperature, relative humidity, dew point, and wet bulb.

• Records up to 32000 data points
• Download the data by plugging the pen directly into a USB port

Datalogging can be programed to begin immediately, at a predetermined time, activated by the unit's push button, or to continually roll over after a set number of data points. Green and red led lights indicate datalogging and alarms.