text.skipToContent text.skipToNavigation

Dual Tech Wall Switch Occupancy Sensor, 120/277V, White

DSW-301-W Wattstopper
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getAggregateRating, 3ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

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 White
Voltage 120/277 VAC
  • Send
  • Save as PDF
  • Add to favorites"> Remove from favorites
    Add to favorites Remove from favorites


  • 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 White
UPC Number 754182935444
Country Of Origin China
Features Motion Sensor, IR (Infrared)
Switch Type Motion Sensor
Application Sector Commercial
Product Width US 1.8 in
Product Weight US 0.31057268722466963 lb
Product Volume US 28.979999999999997 cu in
Product Depth US 1.8 in
Product Height US 4.1 in
Technical Information
Response Frequency 50/60 Hz
Sensor Type Occupancy
Number of Buttons 1
Amperage 8.3 A
Wattage 1200 W
Mounting Type Box
Sensing Range 180 degrees, 1050 sq. ft.
Voltage 120 V, 277 V
Connection Type Wired
Load 1000W


  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 2ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

Questions & Answers

can you install a dsw-301 occ switch along with a DT-305 ceiling occ sensor? with a bz-50 PP?

Asked by: greg
It is recommended that you chose one or the other. The sensors will not work in conjunction with each other.
Answered by: Tier 1 Tech Support
Date published: 2023-09-12

I have 3 x 301's in a row. please post a wiring diagram for more than 2 devices in a row. Also when should use the walk thru mode ?

Asked by: dale
We do not have a diagram that shows more than 2 sensors. You should connect the primary switch, install the second per the diagram and then mirror the same with the remaining 2 switches. A short hallway that is not used often or a storage closet application are places where Walk through mode may be appropriate.
Answered by: Tier 1 Tech Support
Date published: 2023-09-12

Can this be use on one side of a 3 way system with the other switch a regular 3 way>

Asked by: cody
Hello Cody, The DSW301 Occupancy sensor supports Multi-way functionality for use with additional DSW301 sensors. The DSW301 will not work with a traditional 3-way switch and must be paired with another DSW301 for 3-way applications. Best Regards, Technical Support
Answered by: Justin
Date published: 2023-06-16

Can I control bathroom exhaust fan with this switch?

Asked by: Omar G
Hello, Occupancy Dual Technology Sensors DSW301 will support the following loads: 120VAC; 50/60Hz or 277VAC; 50/60Hz 120VAC: 0-1000W ballast, LED, tungsten, 1/6 hp 277VAC: 0-1200W ballast, LED, 1/6 hp Best Regards, Technical Support
Answered by: Justin
Date published: 2023-05-26

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
  • y_2023, m_9, d_27, h_3CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_8
  • loc_en_US, sid_DSW-301-W, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_legrand
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 5ms