Digi-Sense, 98767-17, Traceable Memory-Loc Thermohygrometer with Barometer and Calibration98767-17 Includes Only:ThermohygrometerBuilt-in standHook-and-loop stripMagnetic backing stripWall mount3 x AAA batteriesNIST-traceable calibration certificate with data.Features:NIST-Traceable certificate from A2LA accredited (1750.01) calibration laboratoryStore up to 30 unique alarm eventsSmart-Alarm with visual/audible alarm continues to alert even if the unit returns to nonalarm conditionsAdjustable sampling rate - from 1 min to 12 hrs in 1 min stepsCan upload a USB downloaded file and store on a TraceableLIVE cloud accountPermanently stores 819,150 barometric pressure, humidity, and temperature readingsAltitude compensation from - 100 to 2500 metersSet HI/LO alarms for barometric pressure, temperature, and RHEasily monitor the conditions in manufacturing, labs, and storerooms using the data logging thermohygrometer or barometer. Memory capacity is 2 years when set to 2-minute intervals, longer when set to larger intervals. Each device has a unique ID allowing multiple units to be used in the same location. Easily transfer data recorded in a CSV format to any computer via a USB flash drive-no software is required. The data on each unit cannot be overwritten or modified, reliably securing information that should not be deleted.Alarm tracking feature stores each alarm event detailing which high or low alarm state occurred, when the alarm state occurred, as well as when the condition returned to normal range. Alarm state indicator includes audio alerts and flashing LCD segments. Other status indicators include low-battery, memory full, and USB data transfer.Traceable Products have an individually-numbered Traceable Certificate provided with each unit, that assures accuracy from ISO/IEC 17025:2017(1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Each product goes through an intense vetting process before it can carry the Traceable name, thus saving you both time and money by not having to calibrate separately.Humidity (inside) is for the measuring range for the meter; humidity (outside) is for the probe.Barometric pressure is measured in mbar (mmHg) only. Measuring range is from 500 to 1030 mbar.Altitude compensation is in meters only. Measuring range is -100 to 2500 m in 10 m interval.