Extech® Instruments RH520A humidity and temperature chart recorder is easy to set up and operate, providing simultaneous numerical and graphical display of humidity and temperature readings plus time and date. It has audible and visual alarms with your High/Low setpoints, plus an output socket for relay connection to trigger an external alarm when setpoints are exceeded (alarm module sold separately).
The graphical datalogger can be wall-mounted or placed on a desktop. Its replaceable probe extends up to 3 ft. for measurements in closed environments. Included LabView™ software calculates and graphs dew point, wet bulb, and grains per pound (GPP). Up to 49,000 data points are recorded in memory and can be transferred to a Windows® compatible computer (serial cable and serial-to-USB adapter incuded).