Light Meter Software

This page contains the software, firmware and driver files for ILT's light measurement products.  These files are also located on their respective meter pages.


PLEASE NOTE: Our DataLight software has been tested on both Home and Pro Versions of Windows operating systems, as well as MAC OS X environments where applicable. Other software below has been validated on a PC using Pro Versions of Windows software, and not within home level versions or MAC environments. Please refer to the equipment's specification page to confirm which version of operating system your equipment/ILT software revision is compatible with. If you experience any difficulty with your instrumentation or software, please email [email protected] for assistance.


ILT710 and ILT770 Light Meter Software

ILT710 & ILT770 Light Meter Software v1.0.6

ILT800 Belt Radiometer Software

DataLight CureRight Software for Windows 7, 8 and 10.  (Includes ILT800 Firmware)



DataLight III Software Suite and Firmware for Windows 7, 8 and 10 - Current Release

For ILT1000, ILT2400, ILT2500, and ILT5000


Devices with firmware versions prior to 3.2.x.x MUST follow the included PDF instructions for updating to 3.2.x.x and newer.
You CANNOT update from any version or older directly to 3.2.x.x. 

If your device is already running firmware version 3.2.x.x or later, you are able to update the firmware to later versions with the normal update process.

(ZIP File - Click on link to download)


ILT Firmware File for ILT1000, ILT2400, ILT2500, and ILT5000 (Previous Release)

(ZIP File - Click on link to download)


DataLight III Software Suite for Mac OS X

(ZIP File - Click on link to download)


DataLight III MAC OS X software is compatible with ILT’s latest models including ILT1000 Low Profile Datalogger, ILT5000 Research Radiometer, ILT6000 Rack Mount Multi-Channel Meter and our NEW ILT2400 Hand Held light meter with touch screen display.

ILT Command Line Interface for ILT1000, ILT2400, ILT2500, and ILT5000

(ZIP File - Click on link to download)

ILT350 Setup and Software Driver

(ZIP File - Click on link to download)


ILT1000/ILT5000 Virtual Drivers

(ZIP File - Click on link to download)


LabView Virtual Instrument Drivers to be used with the ILT1000/ILT5000 API. See Command and Control Manual for configuration.


Original LabView Virtual Instrument Drivers (RS-232 only)


LabVIEW® is the most popular programming environment for PC-based measurement systems. This software program provides the maximum flexibility and functionality available without sacrificing ease of use.

We offer free downloads of Virtual Instrument drivers for use with LabVIEW. The LabVIEW program itself is available from National Instruments Corporation.

We also offer a compiled executable version of our Virtual Instrument, which bundles a limited (non-editable) version of LabVIEW for customers who do not wish to purchase a copy of the program. This VI executable displays incoming data in real time and allows the user to save data to a text file for importation into a spreadsheet program. To get the VI drivers or the VI executable, click on one of the links below. If you own a copy of LabVIEW, you will need the files "" and the library "Virtual_Radiometer_20apr99.llb" which includes all sub-vi's and diagrams so that you can customize the program within LabVIEW, running on any platform.

If you do not own a copy of LabVIEW, you will run the file called "Virtual_Radiometer_20apr99.EXE" (note: you must have the file called "serpdrv" in the same folder.) This compiled run-time executable program includes a limited version of LabVIEW, and is only available for Windows 95 / 98 / NT4.

   New download Available!


Labview 7 Compatible Source file, supplied courtesy of Pierantonio Cinzano, Laboratory of Photometry and Radiometry of Light Pollution - ISTIL/LPLAB Light Pollution Science and Technology Institute, Italy. This file includes a fix that will allow you to use LabView 7 and the IL1700/IL1400 without errors. The zipped file contains four individual files: (driver)
Virtual_Radiometer_20apr99_Mod.llb (library)
screen1.jpg (screenshot)
screen2.jpg (screenshot)

NOTE BEFORE DOWNLOADING: International Light Technologies has not tested or modified this file. It is being supplied as a courtesy to our customers. Please use at your own risk.



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