US Office
4258 West 12th Street
Erie, PA 16505
United States (814) 835 0621 Lascar is part of the Larasian Group of technology companies.

EasyLog | EL-SIE-2

Temperature and humidity data logger with display
  • EL-SIE Right Side Humidity Logo.png
  • EL-SIE In Computer.png
  • EL-SIE Right Side Humidity Logo.png
  • EL-SIE In Computer.png


Monitor the environment you live and work in with the EasyLog EL-SIE-2. Advanced onboard software means there is nothing to install on your PC or Mac – simply connect the logger with a USB cable and use your web browser to configure the device and view, analyse and download your data. It really couldn’t be easier.

The bright and clear display shows current readings and device status at a glance, and the product is supplied with a bracket for secure wall mounting. EL-SIE-2 uses standard AAA batteries and typical battery life is over 1 year.

The EL-SIE-2 version measures temperature and relative humidity. Other models that measure temperature only, or temperature, humidity, and pressure, are available, as well as standard and high-accuracy versions. Key markets include facilities and building management, logistics, warehouses and storage, and clean rooms and other pressure-sensitive environments.

Recorded data can be downloaded to your computer, or uploaded to an EasyLog Cloud account for secure storage and powerful analysis.


Measurement Range (T)
-18 to +55°C (-0.4 to +131°F)
±0.3°C (±0.54°F)
Measurement Range (RH)
0 to 100%RH
±2.0% typical (0 to 80%RH)
Logging Rate
10 seconds to 24 hours, user selectable
Start Modes
Immediate, push-to-start, delayed start, parameter triggered
Memory Capacity
1,000,000 total readings, >500,000 readings per channel
Integrated alarm sounder
Power Source
2 x AAA 1.5V battery
Battery Life
>1 year (at 25°C with 10 minute logging rate)
93 x 42 x 17 mm (excluding bracket)
Operating Temperature Range
-18 to +55°C (-0.4 to +131°F)
Environmental Rating



How do I save the EL-SIE website to my Favourites or Bookmarks?

My EL-SIE battery isn't charging. What do I do?

More support


Calibration certificates are available to purchase separately traceable to appropriate international standards, depending on your location.


The EL-SIE-2 temperature and humidity data logger is suitable for a wide variety of applications. These include:

For application stories on our data loggers, visit our case studies section.

You may also like…

EL-SIE Right Side Temp Thumb.png

USB Temperature data logger with display

EL-SIE Right Side Temp Thumb.png

High-accuracy USB temperature data logger with display

EL-SIE Right Side Humidity Thumb.png

High-Accuracy Temperature and humidity data logger with display

EL-SIE Right Side Pressure Thumb.png

Temperature, humidity, and pressure data logger with display