Model GDL Graphical Display Data Logger

Measure Temperature, Humidity and Dew Point, Instant Display

The Model GDL Graphical Display Data Logger can record and instantly display temperature, humidity, and dew point trends in a text or graphic format. The GDL has internal temperature and humidity sensors. With the included Windows® based software, the user can select the sampling interval, high/low alarms, logging channels, and recording start time. Over 40,000 data points can be recorded and the measured data stays secure with a recording session counter and password-protected calibration.

Product Applications

  • Greenhouses/florists
  • Medical storage facilities
  • Refrigeration systems
  • Wine storage

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Code Order
Ships: Next Day
Price: $269.00
Graphical Data Logger for Temperature, Humidity, and Dew Point. Next Day* $269.00 N Order


Memory Size:
43,344 temperature; 21,672 temperature, RH and dew point.
Temperature Range:
15 to 150°F (-10 to 65°C).
Temperature Accuracy:
±1°F (±0.5°C).
Temperature Resolution:
0.01°F (0.01°C).
Humidity Range:
0 to 99% RH.
Humidity Accuracy:
±2% RH, from 10 to 90% RH.
Humidity Resolution:
0.01% RH.
Sampling Method:
Stop on memory full or continuous recording.
Sampling Rate:
second to 18 hours, 1 second increments.
Computer Requirements:
Windows® 98 and above (software included).
Power Requirements:
(3) AA alkaline batteries, installed functional, user replaceable.
Programmable high/low.
USB port (cable included).
7 oz (20 g).
Agency Approvals:


  • Measurements displayed in text or graph
  • Able to record over 40,000 data points and download them to a PC
  • Includes logging summary with details of the sample rate and memory status

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