Extech Hygro-Thermometer Data Logger – SDL500

In stock

The hygro-thermometer data logger stores up to 99 manually stored readings and up to 20M data logged readings with a 2G SD card. Giving temperature, humidity and dew point readings.

Extech Hygro-Thermometer Data Logger – SDL500

Data/time stamps and stores readings on an SD card in Excel format for easy transfer


  • Humidity, Temperature, Dew Point and Wet Bulb functions
  • Selectable data sampling rate of 1 to 3600 seconds
  • Datalogger date/time stamps and stores readings on an SD card in Excel® format for easy transfer to a PC
  • Stores 99 readings manually and 20M readings via 2G SD card
  • Type K/J Thermocouple input for high temperature measurements
  • Large backlit dual LCD screen
  • Record/recall MIN, MAX readings
  • Data Hold plus auto power off with disable function
  • Built-in PC interface
  • Included accessories:
    • 6 AA batteries
    • SD card
    • Case
    • Humidity probe
  • 3 years

This rugged meter is built for field use testing humidity, temperature, dew point and wet bulb to give an accurate view of the environment. With a large LCD screen which displays two values simultaneously. The real power of this meter is realized when data logging.

It can hold 99 manual readings and 20M readings via a 2G SD card which saves the information in an Excel format. This SD card can easily be removed from the meter and inserted into a PC for fast and easy data transfer. Applications for this meter include monitoring temperature and humidity in greenhouses, warehouses, saunas, museums, storage areas and regular houses.

Humidity is very important for living spaces due to its ability to cause skin damage when too low and promote mildew or dust mite growth when too high. The SDL500 Hygro-Thermometer Data Logger User Manual is attached to this page to answer any additional questions.


  • Humidity: 5% to 95%
  • Temperature: 32 to 122°F (0 to 50°C)
  • Dew Point: -13.5 to 120.1°F (-25.3 to 48.9°C)
  • Wet Bulb: -6.9 to 122°F (-21.6 to 50°C)
  • Type K Temperature: -148 to 2372°F (-100 to 1300°C)
  • Type J Temperature: -148 to 2192°F (-100 to 1200°C)
  • Memory: 20,000K data records using 2G SD card
  • Dimensions: 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm)
  • Weight: 23.1oz (655g)

Unit Ship Weight: 2 lbs

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