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The FSP-3x1 sensors provide continuous dimming intensity control based on motion and/or daylight contribution. They control 0-10 VDC LED drivers or dimming ballasts, as well as non-dimming ballasts and, with an FSP-Lx Lens, are rated for wet and cold locations. All control parameters are adjustable via the iOS or Android Sensor Configuration App capable of storing and transmitting unlimited sensor profiles. The FSP-3x1 family is available in three different voltage configurations adding flexibility to your fixture design or project.
Voltage 347 VAC
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  • Designed for LED fixtures and rated for extreme temperatures
  • Fully adjustable high and low dimmed light levels
  • Hold off setpoint with automatic calibration option for convenience and added energy savings
  • Continuous dimming for Energy Code Compliance
  • Adjustable via the iOS® or Android® Sensor Configuration App
  • Choice of four lenses for mounting heights from 8 ft. to 40 ft.
  • Adjustable time delay and cutoff delay


General Info
Product Line Wattstopper
UPC Number 754182943692
Country Of Origin China
Product Width US 3.0 in
Product Weight US 0.35 lb
Product Volume US 11.27 cu in
Product Depth US 1.7 in
Product Height US 1.7 in
Technical Information
Sensor Type Occupancy, Daylight


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Questions & Answers

How do I know which fixtures I have programmed already and which ones I haven’t ?

Asked by: B.C.
You can check the current settings in the programmed FSP-211 using the FSIR remote and selecting the current settings and pointing at the sensor to read settings.
Answered by: Tier 1 Tech Support
Date published: 2023-05-18

can these FSP311 sensors be grouped in different zones?

Asked by: Ronald Cote
Please reach out to our tech. support team for further assistance with this question. Legrand Technical Support: Phone: 1 800-879-8585, Option 3 then Option 1 Mon - Fri: 7am - 7pm CST (excluding holidays)
Answered by: Tier 1 Tech Support
Date published: 2023-04-20

Does this device use any components manufactured by Huawei, STE, Hytera, Hangzhou Hikvision, or Dahua?

Asked by: Steve
The nature of this request is best addressed by an application specialist. Please contact Wattstopper Technical Support @800-879-8585 so that your request can be directed through the proper channels
Answered by: Tier 1 Tech Support
Date published: 2022-06-07

Inverter cycle power, fixture initially turns back on and seems to go through reboot process that lasts around 30-60 seconds. Once boot sequence completed relay opens and the fixture remains off until it is triggered by motion, wont pass inspection Ideas?

Asked by: Bob
It would be best to contact Wattstopper Tech Support at 1-800-879-8585 option#1 for us to gather more information to help resolve your issue.
Answered by: Tier 1 Tech Support
Date published: 2022-06-07

What type of Bluetooth chip do these sensors use? Bluetooth LE 4.0?

Asked by: Daniel

We have lights that when we try to connect it says password does not match 

Asked by: J
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