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FSP-311B Wattstopper
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The FSP-3x1B sensors provide continuous dimming light level 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 sensor profiles. The FSP-3x1B family is available in three configurations for mounting inside a fixture, to the outside of a fixture via a 1/2” knockout, or to a pole.
Voltage 120 V
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  • Designed for LED fixtures and rated for extreme temperatures; options for box or pole mounting
  • Fully adjustable high and low dimmed light levels
  • Hold off setpoint with automatic calibration option for convenience and added energy savings
  • Continuous dimming & daylight harvesting for energy efficiency and energy code compliance
  • Adjustable via the iOS® or Android® Sensor Configuration App
  • IP66 rated with choice of lenses for wet and outdoor locations, and mounting heights from 8’ to 40’
  • Adjustable time delay and cutoff delay


General Info
Product Line Wattstopper
Color White
UPC Number 754182940776
Country Of Origin China
Product Width US 6.0 in
Product Weight US 0.44 lb
Product Volume US 39.69 cu in
Product Depth US 6.3 in
Product Height US 1.0 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.
Security   Yes This product is ioXt certified
Technical Information
Sensor Type Daylight, Occupancy


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Questions & Answers

is there a standalone remote tool like FSIR-100 for FSP-311B ?

Asked by: Vamsi
No, for the FSP-300 series sensors, you will need to use the Sensor Configuration App installed on your Apple or Android device.
Answered by: Tier 1 Tech Support
Date published: 2023-12-06

Can I get these in a bronze color?

Asked by: Anonymous
Hi, The sensor itself is white but the lens covers are available in white, black, bronze, and gray.
Answered by: Tier 1 Tech Support
Date published: 2023-03-27

I have 311B without a drop or straight nipple. Where can I find ordering information for either the drop nipple or the straight nipple?

Asked by: Anonymous
The nipples are built into the casing and cannot be ordered separately.
Answered by: Tier 1 Tech Support
Date published: 2022-06-07

Are the FSP211, 311, 321 series of sensors ok for coastal applications? What about the use in a natatorium application?

Asked by: Timothy
These sensors are IP66 rated for wet and outdoor locations.
Answered by: Tier 1 Tech Support
Date published: 2023-05-18
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