USB Humidity and Temperature Data Logger – A15-MT-DLU



Monitor RH and Temperature with a USB data logger. Records over 250, 000 temperature and relative humidity readings in one or more sessions for up to 1 year. Its easy-to-use design allows users to program audible alarm thresholds with a highly visible confidence/alarm LEDs. A graphic LCD with an on-screen menu provides real-time data analysis as a summary or a graph.

Quickly configure and download data via USB port.

Includes USB software, two batteries, mounting clip, and USB cable.


  • Building and site monitoring
  • Housing & business premises
  • Veterinary
  • Museum and heritage monitoring

Additional information

Part No.


Measurement Range

Temperature: -30°C to 80°C (-22°F to 176°F)
Humidity: 0 to 100%RH

Internal Resolution

Temperature: 0.1°C (0.1°F)
Humidity: 0.1%RH


Temerature: ± 0.35°C (0.59°F) typical (5 to 60°C)
Humidity: 2.05%RH typical (20 to 80%RH)

Long Term Stability

Temperature: <0.02°C (0.04°F) / year
Humidity: <0.25%RH / year

Logging Rate

User selectable between 10 seconds and 1 hour

Communication Standard

USB connection

  • Certificate of Calibration: $120