HOBO UX90-002 Light On/Off Data Logger

The HOBO Light On/Off data logger monitors indoor light changes with an internal sensor and records light on and off conditions, making it ideal for building energy audits and light usage analysis. The HOBO UX90-002 Light On/OffData Logger is available in a standard 128 KB memory model (UX90-002) capable of 84,650 measurements and an expanded 512KB memory version (UX90-002M) capable of over 346,795 measurements.

The UX90-002 Data Logger is for use in Indoorenvironments

The UX90-002 Data Logger supports the following measurements:

Light On/Off


The software HOBOware is included at no cost and can be downloaded on our website.

USB-cable can be bought separately.



  • Automatic calibration of ON and OFF thresholds
  • Adjustable sensitivity for low and high light levels
  • Accessories include light tubes to eliminate the interference of ambient light
  • UX90-002 128k
  • X90-002 M 512k
Price excl. VAT
  • 830 kr
  • 1090 kr
  • 140 kr


Some of our references

Skärmklipp 2017-12-19 18.18.07

                    Preferred supplier in Smart Grid Gotland