This datalogger module can be used to monitor humidity and temperature of greenhouses, warehouses, food transports, aircraft cabins, refrigerated trucks, containers, museums, andhvac equipment. It measures and stores up to 32700 relative humidity and 32700 temperature readings over 0 to 100%rh and -40 to +70c (-40 to +158f) measurement ranges by your pcwith usb interface.the lcd can show current readings, max, min and sign of alarm. Features: memory for 32700 readingsdew point indication via windows softwareselectable measuring cycle: 2s, .30s, 1m, .10m, 30m, 1hr, .6hr.24hrstatus indication via redyellow led and green ledusb interface for set-up and data downloaduser-programmable alarm thresholds for relative humidity and temperatureanalysis software used to view graph for logging data