The NOMAD-RH Series Datalogger will measure and record both temperature and relative humidity simultaneously using the internal sensors. In addition to the temperature and humidity, the NOMAD datalogger will also store the unit identification number, start time, sample interval and descriptive text relating to the logging session. The NOMAD datalogger also features programmable alarm limits. If an alarm condition occurs, an on board LED will light when the pushbutton is pressed. Once collected, the data may be downloaded to a computer through a standard RS-232 connection using one of the three available software packages.