Lascar EL-SIE-2, Manual

EL-SIE-2

Temperature and Humidity USB Data Logger, 

EasyLog Cloud Compatible

Monitor the environment you live and work in with the EasyLog EL-SIE-2. Configuration is simple, with no software to install 

on your PC or Mac – just connect the logger with a USB cable, and use your standard web browser to configure the device for 

logging. You don’t even need internet access to set up and use the EL-SIE-2, it really couldn’t be easier.

The logging interval can be set between 10 seconds and 24 hours, with immediate, delayed, triggered or push-to-start logging. 

Alarms are fully user configurable, with functionality including cumulative alarms, pre-alarms, a delay before alarm triggering, 

and an alarm hold option, which continues showing the alarm condition even if the reading returns to an acceptable level.

The display shows current, maximum and minimum readings, and three coloured LEDs indicate device status at a glance.

Once logging is complete, re-connect to your computer and use your browser to view, analyse and save your data. You can also 

choose to upload your data to an Easy Log Cloud account, making the data accessible online for powerful graphing, analysis and 

report generation.  

Typical battery life is over 1 year using standard AAA alkaline batteries, and a wall mounting bracket is supplied with the device.

•  -18 to +55°C (-0.4 to +131°F) temperature measurement range

•  0 to 100%RH humidity measurement range

•  Stores over 1,000,000 readings (As per spec table)

•  No software to install - configure using your normal web browser

•  Use with a PC or Mac

•  Display shows current, maximum and minimum readings

•  Status and alarm indicators

•  Data can be uploaded to the EasyLog Cloud

Temperature

Measurement range

-18 to +55°C (-0.4 to +131°F)

Resolution

0.01°

Accuracy

±0.3°C (±0.54°F) typical

Long term stability

<0.03°C (<0.054°F) / year

Measurement units

°C, °F or K

Relative Humidity

Measurement range

0 to 100%RH

Resolution

0.1%

Accuracy

±2.0% typical (0 to 100%RH)

Long term stability

<0.25%RH / year typical

Dew Point

Accuracy

1.7°C typical

(40 to 100%RH)

Logging rate

10 seconds to 24 hours, user selectable

Start modes

Immediate, push to start, delayed start, 

parameter triggered

Memory capacity

Over 1,000,000 total readings >500,000 readings per 

channel

Power source

2 x AAA 1.5V battery

Battery life

>1 year (at 25°C with 10 minute logging rate)

Dimensions

93 x 42 x 17 mm (excluding bracket)

Operating temperature range

-18 to +55°C (-0.4 to +131°F)

Environmental rating

IP4X

SPECIFICATIONS

CALIBRATION CERTIFICATES AVAILABLE

Lascar offers a Traceable Calibration Certificate Service on Temperature Data Loggers. Using reference equipment 

which has been calibrated by a UKAS/NIST/CNAS accredited laboratory and using apparatus traceable to national or 

international standards. For more information please see 

www.lascarelectronics.com

.

BAT 1V5 AAA

2 x AAA 1.5V alkaline 

batteries

CABLE USB C 0.5M

USB A to USB C Cable

INCLUDED IN THE BOX

BAT 1V5 AAA

2 x AAA 1.5V alkaline 

batteries

EL-SIE WALL BRACKET

Mounting bracket

CABLE USB C 0.5M

USB A to USB C Cable

ACCESSORIES

This datasheet is also available in other languages.