WattStopper UT-305-3 Ultrasoni...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$361.63
$201.65
WattStopper UT-305-3 Ultrasonic Ceiling Occupancy Sensor 24VDC 2000 sq ft Coverage with Patented Diffusion Technology

WattStopper UT-305-3 Ultrasonic Ceiling Occupancy Sensor 24VDC 2000 sq ft Coverage with Patented Diffusion Technology

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Model: UT-305-3
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WattStopper UT-305-3 Ultrasonic Ceiling Occupancy Sensor 24VDC 2000 sq ft Coverage with Patented Diffusion Technology

Advanced Ultrasonic Detection for Professional Building Automation

The WattStopper UT-305-3 Ultrasonic Ceiling Occupancy Sensor delivers reliable occupancy detection with 24VDC operation and up to 2000 square feet of coverage. Featuring patented ultrasonic diffusion technology, this professional-grade sensor provides enhanced coverage distribution and integrates seamlessly with building automation systems through its isolated relay capability.

Professional Features & Benefits

  • Patented Ultrasonic Diffusion Technology: Spreads coverage to a wider area for more reliable detection and reduced blind spots in large spaces.
  • 2000 Square Feet Coverage: Handles substantial areas with adjustable range from 500-2000 square feet for flexible installation requirements.
  • 24VDC Low Voltage Operation: Provides safe, efficient power consumption suitable for commercial and industrial applications.
  • Isolated Relay Integration: Enables seamless connection with Building Automation Systems (BAS) or HVAC controls for comprehensive facility management.
  • Manual Override Capability: Works with low-voltage momentary switches for manual control when needed, providing operational flexibility.
  • DIP Switch Configuration: Simplifies sensor adjustments and customization without complex programming requirements.
  • Clip Mounting System: Makes ceiling tile installation simple and secure with professional appearance.

Technical Specifications

  • Country Of Origin: China
  • Product Environmental Profile: Yes

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Facilities
  • Retail Establishments
  • Industrial Facilities
  • Government Buildings
  • Multi-Tenant Properties

Why Choose WattStopper Quality?

WattStopper delivers proven reliability in occupancy sensing technology with patented ultrasonic diffusion for superior coverage performance. The UT-305-3 combines professional-grade construction with simplified installation features, making it an ideal choice for demanding commercial and industrial applications requiring dependable occupancy detection and building system integration.

Manufacturer Resources

Spec Sheet

Product Specs

Product Environmental Profile:
Yes
Department:
Electrical
Product Subgroup:
Lighting Controls & Sensors
Product Type:
Occupancy Sensor
Product Group:
Wiring Devices

WattStopper UT-305-3 – Frequently Asked Questions

1) Can the WattStopper UT-305-3 run on line voltage, or does it need a power pack?
The UT-305-3 is a 24VDC low voltage sensor. It does not switch 120/277V on its own, so it has to be fed from a low voltage power pack or a 24VDC source from the controls system. If you want a sensor that wires directly to line voltage instead, the Leviton ODS10-ID is a PIR occupancy sensor rated 120/277V AC.
2) How much floor area will the UT-305-3 ceiling sensor actually cover?
Up to 2000 square feet, and the range is adjustable down to 500 square feet so you can tune it to the room instead of picking up traffic in the corridor. The patented ultrasonic diffusion spreads the pattern wider to cut blind spots in large open areas.
3) Ultrasonic or PIR ceiling sensor - which should I use for an open office?
Ultrasonic, like the UT-305-3, senses motion by sound wave disturbance, so it picks up minor movement and works around partial obstructions such as partitions and furniture. PIR needs line of sight to a heat source. If the space is open and unobstructed, a PIR unit such as the Leviton ODS10-ID-E (2100 sq ft) or the low-profile Wattstopper CI305 (1200 sq ft, 360 degree) is the simpler choice. For restrooms, cubicle farms and rooms with soft traffic, ultrasonic is the one that holds the lights on.
4) Can I tie a WattStopper UT-305-3 into our BAS or HVAC controls?
Yes. The UT-305-3 carries an isolated relay specifically for handing an occupancy signal to a Building Automation System or HVAC control, so the same sensor that runs the lights can set back a VAV box or fan coil when the room empties.
5) Is there a direct equivalent to the WattStopper UT-305-3 ultrasonic ceiling sensor under another brand label?
Yes. The Pass & Seymour UT3053 is the same Wattstopper ceiling mount ultrasonic occupancy sensor, cataloged in the UT-300 series with 24V operation, 360 degree coverage and 2000 square feet of coverage - matching the UT-305-3's 24VDC operation and 2000 square foot coverage. Legrand sells the Wattstopper line under both labels, so if a drawing calls out UT-305-3 and the Pass & Seymour UT3053 is what is in hand, it is the same device.
6) What should I use instead of the UT-305-3 in a space where ultrasonic detection picks up HVAC airflow or activity in the corridor?
Step to a passive infrared ceiling sensor, which responds to moving heat within line of sight rather than air motion. The Wattstopper CI305 is a low-profile ceiling PIR sensor with 360 degree coverage rated 1200 square feet, so plan for the smaller coverage footprint compared with the UT-305-3's 2000 square feet. For spaces where you want ultrasonic sensitivity to small motion but with PIR to confirm, the Wattstopper DT300 is a dual technology ceiling sensor at 24V with 360 degree coverage.
7) The UT-305-3 needs a separate power pack because it runs on 24VDC. What is the alternative if I want to wire the sensor straight to line voltage?
Use a line voltage occupancy sensor instead. The Leviton ODS10-ID is a commercial grade PIR occupancy sensor rated 120/277V AC, and the ODS10-ID-E is the same style of 120/277V PIR sensor rated 2100 square feet in black. The Leviton ODC Series ODC0S-I1W is also a commercial grade line voltage PIR sensor. The trade-off is detection method and mounting: those are PIR devices, while the UT-305-3 is an ultrasonic ceiling sensor with patented diffusion technology and clip mounting for ceiling tile.
8) Can occupants still switch the lights manually with this sensor installed?
Yes. The UT-305-3 accepts low voltage momentary switches for manual override, so staff can kill the lights in a conference room during a presentation or bring them on ahead of the sensor.
9) How does the UT-305-3 mount in a suspended ceiling?
It uses a clip mounting system made for ceiling tile, so it drops into a lay-in grid ceiling without a back box at the sensor itself. Low voltage wiring runs back to the power pack above the tile.
10) Do I need software or a programmer to set the time delay and sensitivity?
No. Adjustments on the UT-305-3 are made with DIP switches on the unit, so an electrician sets it at the sensor without a handheld programmer or commissioning software.
11) Is there a low voltage alternative to the UT-305-3 if I only need a small room covered?
For a smaller space on the same low voltage approach, the Lithonia CM-9 is a PIR low voltage occupancy sensor switch rated 12-24V AC/DC, and the CMR-9 is the version with an integral relay. Both are PIR rather than ultrasonic, so they want clear line of sight to the occupant.
12) I need a wall-mounted occupancy sensor instead of a ceiling unit - what is the equivalent?
The UT-305-3 is strictly a ceiling mount unit, clipped into tile. For a wall location, the Wattstopper PW-302 is a PIR dual-relay wall occupancy sensor. Two relays let you control lighting and a second load, such as HVAC, from one device.
13) Can a Lithonia CM-9 be swapped in for a WattStopper UT-305-3 on the same low voltage power pack?
They share the low voltage approach but not the detection technology or the coverage. The Lithonia CM-9 is a PIR low voltage occupancy sensor switch rated 12-24V AC/DC in white, so it suits the same class of 24V wiring as the UT-305-3, which operates at 24VDC. The UT-305-3 detects ultrasonically with adjustable coverage from 500 to 2000 square feet and carries an isolated relay for BAS or HVAC tie-in; if that relay output is part of your sequence, the Lithonia equivalent to look at is the CMR-9 PIR occupancy sensor with relay. Verify coverage against the room before substituting.
14) We need to switch two separate lighting circuits from one sensor. Does the UT-305-3 do that, or is there a better part?
The UT-305-3 is a ceiling ultrasonic sensor whose isolated relay is intended for connection to a Building Automation System or HVAC controls rather than for splitting lighting loads. For dual circuit switching, the Wattstopper PW-302 is a PIR dual-relay wall occupancy sensor, which gives you two relay outputs from a single wall-mounted device. Note the mounting and detection difference: the PW-302 is wall mounted PIR, while the UT-305-3 clips into ceiling tile and detects ultrasonically over 500 to 2000 square feet.
15) Is the Leviton ODS15-IDW a substitute for the UT-305-3 in an open office?
Not a like-for-like one. The Leviton ODS15-IDW is a PIR self-adaptive commercial grade occupancy sensor, so it adjusts its own sensitivity and timing but still relies on line-of-sight infrared detection. The UT-305-3 is an ultrasonic ceiling sensor using patented diffusion technology to spread coverage wider and reduce blind spots across up to 2000 square feet, which is the behavior open offices with partitions are usually specified for. Treat the ODS15-IDW as a different detection approach rather than a drop-in.
16) What is the difference between the Wattstopper UT-305-3 and the Wattstopper DT300 ceiling sensor?
Both are 24V ceiling-mounted Wattstopper sensors with 360 degree coverage. The DT300 is a dual technology ceiling occupancy sensor, meaning it combines two detection methods before it switches. The UT-305-3 is ultrasonic only, using patented diffusion technology for wider coverage distribution, with coverage adjustable from 500 to 2000 square feet, DIP switch configuration and an isolated relay for BAS or HVAC integration.
17) Is this WattStopper sensor suitable for a hospital or school retrofit?
The UT-305-3 is built for commercial and institutional work, including healthcare, educational, government, retail, industrial and multi-tenant buildings. WattStopper publishes a Product Environmental Profile for it, which helps on projects tracking material disclosure. Country of origin is China.
How fast can I get the WattStopper UT-305-3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the WattStopper UT-305-3 come with a warranty?
Absolutely. The WattStopper UT-305-3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the WattStopper UT-305-3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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