PEM2 Datalogger


IPI is exploring new possibilities for datalogger enterprises and has halted the production of PEM2® dataloggers. We continue to support and service PEM2s in the field and recently added enhancements to PEM2® technical support to improve those services. We also continue to focus on strengthening IPI’s unique, web-based, preservation environmental management and analysis software, eClimateNotebook®, and have initiated efforts to expand the compatibility of eClimateNotebook® with a variety of monitoring devices. Read More

For assistance on logger recommendations and/or eClimateNotebook compatibility, IPI specialists can be reached at

This compact, highly accurate monitor is the easiest-to-use device of its kind on the market. Your data can be downloaded instantly as a text file to any USB flash drive. No user setup or user-installed software is required. The PEM2 is compatible with IPI's eClimateNotebook® website and Microsoft® Excel®. A USB flash drive allows you, through simple command files, to control the display and temperature scale, include logger location information in the text file, and clear data. More than ten (10) years of data storage and +/- five (5) years of battery life. Certified NIST-traceable calibration. Monitor measures 3.75" x 2.375" x 1.5". Works with both PC and Mac.


Enclosure material: ABS plastic
Dimensions (h x w x d): 7.3 cm (2.875") x 9.5 cm (3.75") x 3.8 cm (1.5")
Mounting: Shelf or wall mount; secure mounting possible
200g (7 oz.)
Outputs temperature and humidity alternating in a 15-second cycle
Operating Range
-40C to 65C (-40F to 150F)
Sensor type: Texas Instruments TMP123 Digital Temperature Sensor
Accuracy: 0.5C (1F) across operating range
Resolution: 0.1C (0.1F)
Sensor type: Thin film polymer capacitance sensor, Sensirion SHT75
Operating range: 0% to 100% RH, non-condensing
Accuracy: 2% RH (10% to 90%), 3.5% RH (0% to 10% and 90% to 100%) across operating temperature range
Certificate of NIST-traceable calibration provided from Thunder Scientific Model 2500 Humidity Generator
Holds more than 10 years of data at a fixed sample rate of 30 minutes (each 30-minute data point is an average of 6 readings taken at 5-minute intervals)
Data Retrieval
Via standard USB flash drive (USB 2.0 supported; USB flash drive not supplied)
Data written as text file readable in PC or Mac
Uses AA lithium (supplied) or alkaline batteries
Battery life +/- 5 years
RoHS compliance (reduction of hazardous substances)
The PEM2® is guaranteed against defects in manufacturing for a period of three (3) years from date of purchase. Units that fail under reasonable conditions of use during that time will be repaired or replaced free of charge. A fee will apply to repairs made after the three (3) year warranty period.
Recalibration for temperature and RH accuracy is recommended every three years. Recalibration service includes sensor recalibration or replacement, battery testing and/or replacement, firmware upgrade if applicable, and issuance of a new certificate of calibration.


Quantity Discount: $349 each for 1-9 units, $299 each for 10+ units.

(click to enlarge)

Price: $349.00

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