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Ultrasonic Ceiling Occupancy Sensor, 24VDC, 500 sq ft

UT-305-1 Wattstopper
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Wattstopper’s UT-300 Ultrasonic Ceiling Sensors automatically turn lighting on and off based on occupancy. The sensors mount on the ceiling with a flat, unobtrusive appearance and provides 360° coverage.
Footprint 500 sq ft
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Features

  • Architecturally appealing low-profile appearance
  • Ultrasonic diffusers give more comprehensive coverage
  • Accepts low-voltage switch input for manual-on operation
  • Plug terminal wiring for quick and easy installation
  • Walk-through mode increases savings potential
  • Automatic or manual-on operation when used with a BZ-150 Power Pack

Specifications

General Info
Product Line Wattstopper
UPC Number 754182915170
Country Of Origin China
Features Indicator Lights
Application Sector Commercial
Dimensions
Product Width US 4.5 in
Product Weight US 0.2187 lb
Product Volume US 44.4 cu in
Product Depth US 1.6 in
Product Height US 4.5 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
Product Environmental Profile Yes
Technical Information
Sensor Type Occupancy
Amperage 30 A
Sensor Technology Ultrasonic
Indicator LED Light
Connection Type Wired

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Questions & Answers

Will these updated models work with BZ-150 Power Packs?

Asked by: Anonymous
Yes, this sensor will work with the BZ-150 Power Pack.
Answered by: Justin
Date published: 2024-08-15

Please advise how can we install UT-305-3 as surface mount installation. What accessories do we need for surface mount installation.

Asked by: Mohammed Kazim
Wattstopper does not currently offer a surface mount kit for the UT-305.
Answered by: Justin
Date published: 2024-07-11

The sensitivity control does not seem to be working correctly. Full CCW works but as you turn the control CW, it seems to not work.This unit controls the lights and a exhaust fan.The panel that the unit is on has some vibration from the exhaust fan nearby

Asked by: Leo Schaaf
If the unit is vibrating, I suspect that is the problem. Once you take the sensor out of service mode, the sensor is again active (at varying degrees of sensitivity depending upon how far CW you adjust the trim pot), but due to the vibration, the sensor sees everything moving and will hold the lights ON.
Answered by: Tier 1 Tech Support
Date published: 2024-03-28

on the UT-305-3 what size hole is recommended to be cut into ceiling tiles ?

Asked by: Anonymous
If you are mounting directly to the ceiling, the installation manual suggests a 3.5 to 4 inch round hole or it can be mounted into a standard octagonal J -Box.
Answered by: Tier 1 Tech Support
Date published: 2023-09-05

Is there an replacement kit to go from the W-1000A to a UT-300/305 due to the different shape and mounting? Or any documentation to help the installers with changing out the obsolete W-1000 to the recommended replacement of a UT-300?

Asked by: Frank
Hi Frank, Sorry but at this time we do not have documentation for the exchange from W series to UT-300 series. Please follow the instructions included with the new sensor for mounting instructions or reach out to tech support for more help. Phone: 1-800-879-8585, Option 3 Mon - Fri: 7am - 7pm CST (excluding holidays)
Answered by: Tier 1 Tech Support
Date published: 2023-08-09

in regards to p/n- UT-305-1...is it possible to mount to a 4" sq. box?? adapter??

Asked by: tony
The sensor is designed to fit in a 4 inch Octagonal J-Box that can be mounted.
Answered by: Tier 1 Tech Support
Date published: 2023-07-17

What is the difference between this one and the W-1000A?

Asked by: Smiley74
The current draw is the biggest difference between the 2 sensors. The UT-355 has a 40ma current draw and you can have up to 5 sensors on one BZ power pack. The W1000A has a 16ma current draw and you can have up to 9 sensors on one BZ power pack.
Answered by: Tier 1 Tech Support
Date published: 2023-04-14

If this is placed in a bathroom where there's a laundry in an immediately adjacent room, will this be triggered by the sound of the laundry running?

Asked by: BriD
Ultrasonic sensors detect the presence of people by sending out ultrasonic sound waves into a space and measuring the speed at which they return. They look for frequency changes caused by a moving person. Sound in a nearby room will not affect it's operation.
Answered by: Legrand Technical Support
Date published: 2021-05-03
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