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Manufacturer and global supplier
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devices used for documenting
products throughout the cold
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•Temperature Humidity Logger for Vaccine Clinics


EZ Logger

  • Humidity/Temp USB data logger
  • Configuration software
  • User-selectable alarm thresholds
  • LEDs indicate logger status
  • IP67 protection
  • RoHS compliant

This data logger measures and stores up to 16,382 relative humidity and 16,382 temperature readings over 0 to 100%RH and -35 to +80°C (-31 to +176°F) measurement ranges. The user can easily set up the logging rate and start time, and download the stored data by plugging the module straight into a PC's USB port and running the purpose designed software under Windows XP, Vista, 7 and 8. Relative humidity, temperature and dew point (the temperature at which water vapor present in the air begins to condense) data can then be graphed, printed and exported to other applications.

The data logger is supplied complete with a long-life lithium battery, which can typically allow logging for a year. Status indication is via flashing red and green LEDs. The logger is protected against ingress from water and dust to IP67 standard when the plastic cap and seal are fitted.

EZ Logger Graph

Sample plot using MDAS-Pro for the configuration and graphing software





Relative Humidity Measurement range %RH 0   100
Repeatability (short term) %RH   ±0.1  
Accuracy (overall error) (20-80%RH) %RH   ±5.0**  
Internal resolution %RH   0.5  
Long term stability %RH   0.5  
Temperature Measurement range °C (°F) -35 (-31)   +80 (+176)
Repeatability °C (°F)   ±0.1 (±0.2)  
Accuracy (overall error) (20-80%RH) °C (°F)   ±0.5 (±1)  
Internal resolution °C (°F)   0.5 (1)  
Dew Point Accuracy (overall error) (25°C, 40-100%RH) °C (°F)   ±1.1 (±2)***  
Logging rate every 10s   every 12hr
Operating temperature range °C (°F) -35 (-31)   +80 (+176)
1/2AA 3.6V Lithium Battery Life   1* year  

*Depending on sample rate, ambient temperatures and use of alarm LEDs
** This specifies the overall error in the logged readings, for relative humidity measurements between 20 and 80%RH
*** This specifies the overall error in the calculated dew point, for relative humidity measurements between 40 and 100%RH at 25°C

For more information:

Download a PDF of the EZ Logger Product Guide.
Download a PDF of the EZ Logger Quick Start Guide.

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  rev. Feb-06-2017