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Daylighting Sensor, 0 -10 VDC dimming ballasts, White

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The LightSaver LS-301 is a closed loop, ceiling mount, low voltage indoor photosensor that works with standard, 0–10 VDC electronic dimming ballasts or compatible LED drivers to dim lighting as daylight increases
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  • Provides precise control of lighting to maintain desired light level
  • Extremely linear photocell response with greater than 1% accuracy
  • Designed to measure light as the human eye perceives it, eliminating ““overreporting”” illumination levels provided by daylight
  • California Title 24-2013 compliant
  • Separate handheld remote controls for setup and occupant adjustment to prevent tampering
  • Boosts energy savings by reducing maximum lamp output, often resulting in a 20% reduction or more compared with lights at full output
  • Achieves lumen maintenance by holding target light level as lamp output decreases over time


General Info
Product Line Wattstopper
UPC Number 754182914265
Country Of Origin China
Product Width US 2.4 in
Product Weight US 0.1 lb
Product Volume US 25.6 cu in
Product Depth US 2.1 in
Product Height US 2.4 in
Additional Information
RoHS Conformant Yes This product meets the material restrictions of Article 4 of the RoHS Directive (2011/65/EU), including Commission Delegated Directive 2015/863.
DesignLights Consortium Qualified System Yes
Security   Yes This product is ioXt certified
Technical Information
Sensor Type Daylight


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Questions & Answers

The LSR-301-S does not come with an LED Light and won't let me do the adjustments. I already have check the wiring and everything is as instructed. Check troubleshooting content and couldn't find anything helpful

Asked by: Carlos
The instructions for using the LSR-301-S can be found on page 3 of the installation instructions, which are available for download via the following link: https://www.legrand.us/lighting-controls-and-systems/wireless-controls/configuration-tools/daylighting-sensor-handheld-remote-control-for-ls-301-setup/p/lsr-301-s?text=LSR-301-S If you have additional questions, please contact our Technical Support team at 800-879-8585,
Answered by: Tier 1 Tech Support
Date published: 2024-01-26

Do you have to use the tool to make the ls301 work at initial installation?

Asked by: Anonymous
Yes, the LSR-301-S is required to set up the LS-301 daylight sensor
Answered by: Tier 1 Tech Support
Date published: 2022-08-29

Does the LS-301 open the 0-10v circuit when normal power is lost so an ELCU can be used on EM lighting in the daylight zone? The installation documents do not have any information on this.

Asked by: Amy Lee
No, the LS-301 is not guaranteed to go to an open state when power is lost.
Answered by: Tier 1 Tech Support
Date published: 2022-06-08
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