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Dual Tech Wall Switch Occupancy Sensor, 347V, Black

DSW-301-347-B Wattstopper
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The DSW-301 dual technology wall switch sensor turns lights OFF and ON based on occupancy. It combines the benefits of passive infrared (PIR) and ultrasonic detection technologies. The DSW-301 replaces existing wall switches and fits behind a standard decorator wall plate.
Color Black
Voltage 347 VAC


  • Zero-crossing for long relay life
  • Vandal resistant lens combines precise coverage with durability
  • Selectable walk-through mode turns lights off three minutes after initial occupancy if no motion is detected after the first 30 seconds
  • Test mode allows quick and easy adjustments
  • Selectable audible alert for impending shutoff
  • In automatic mode, sensor returns automatically to Auto-ON after lights are turned off manually; ideal for presentations
  • Four occupancy logic options to customize control to meet application needs


General Info
Product Line Wattstopper
Color Black
UPC Number 754182935635
Country Of Origin China
Product Width US 3.0 in
Product Weight US 0.45 lb
Product Volume US 37.97 cu in
Product Depth US 4.9 in
Product Height US 2.5 in


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Questions & Answers

Will a DSW301W work without a ground connection?

Asked by: Anonymous
Hello, DSW301W - The ground wire (green) must be fastened to ground for the sensor to work properly. Best Regards, Technical Support
Answered by: Justin
Date published: 2023-05-04

Is the watt stopper dsw 301w  also a 3-way switch

Asked by: Anonymous
Hello, DSW-301-W supports the following Multi-way features: (Total of 4 Sensors) The Multi-Way capability is available on all models. Sensors can easily be wired together for convenient control of a common load. When wiring this way, only use 300 series sensors. Multi-Way in 300 series is not compatible with prior sensor models. The following principles apply for Multi-Way: • All units should be on the same phase. • All units can see each other’s push-button events and respond accordingly. • All units can see each other’s PIR trigger event. The response will be determined by the Light Level setting and/or conditions of the space of the detecting sensor. • The time delay for all units is defined by the unit with the smallest time delay Best Regards, Technical Support
Answered by: Justin
Date published: 2023-03-06

Is there any way to purchase a replacement plastic lens for this? During construction, mine popped off and was swept up and disappeared, and it seems like such a cheap little piece that should be replaceable as it is easy to remove and/or damage.

Asked by: Mea Felton
The lens is not available as an individual part. Please contact Wattstopper Technical Support for further information. 800-879-8585.
Answered by: Tier 1 Tech Support
Date published: 2022-12-21

What relay positions are needed to return this until back to basic on/off (no motion sensing) functionality?

Asked by: ankr
Reset to Default Use the DIP Switch Settings tables shown below to return features to factory settings. To reset the DSW, press and hold the Relay 1 button for 10 seconds until a triple beep sounds. This resets the sensor and disables light level control (the brightest ambient light will not hold the light OFF).
Answered by: Legrand Technical Support
Date published: 2022-12-15

Can I control bathroom exhaust fan with this switch?

Asked by: Anonymous
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