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Dual Tech Occupancy Sensor 100 -347 VAC, center mount 360 USA

DT-355-U Wattstopper
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Wattstopper’s low profile DT-355 dual technology occupancy sensor combines the benefits of passive infrared (PIR) and ultrasonic technologies. The sensor mounts on the ceiling with a flat, unobtrusive appearance and provides 360 degrees of coverage.

BAA Yes
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Features

  • Architecturally appealing low profile appearance
  • Ultrasonic diffusers give more comprehensive coverage
  • Operates at 120, 230 (single phase), 277 or 347 VAC, 50/60 Hz
  • Terminal wiring for quick and easy installation
  • Walk-through mode increases savings potential

Specifications

General Info
Product Line Wattstopper
Color White
UPC Number 754182925858
Country Of Origin United States
Product Series DT-355
Features Adjustable Time Delay, Indicator Lights, Isolated Relay, Light Level Sensor, Sensitivity Adjustment
Installation Location Ceiling
Included Mounting Screws, Sensor Mask
Application Sector Commercial
Warranty Type 5-Year
Type Sensor
Dimensions
Product Width US 4.5 in
Product Weight US 0.2 lb
Product Volume US 44.4 cu in
Product Depth US 1.5 in
Product Height US 4.5 in
Additional Information
Product Environmental Profile Yes
Technical Information
Operating Temperature Min 32 °F
Ultrasonic Frequency 40 kHz
Has Battery No
Number of Connections 3
Sensor Coverage Pattern 360 deg
Sensor Type Occupancy
Operating Temperature Max 131 °F
Sensor Mounting Height 8-12 ft
Sensor Technology Dual Technology, Passive Infrared (PIR), Ultrasonic
Indicator LED Light
Input Voltage 120/230/277/347 VAC
Line Frequency 50 Hz, 60 Hz
Sensor Coverage 1000 sq ft
Wattage 800 W
Mounting Type 2-1/4 in Deep J-Box, 4 in Octagonal J-Box, Surface
On Function Auto On
Operating Temperature 32°-131°F (0°-55°C)
Sensing Range 36 ft
Wire Connection Type Flying Leads

Reviews

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Questions & Answers

If the DT-355 fails, do the lights come ON?

Asked by: Jeff Crisp
If a DT-355 sensor fails, the lights remain in their current state.
Answered by: Justin
Date published: 2024-07-11

I am installing dt-355 with pw-301 switch and having trouble. I am wondering if you can help me out. When installed it has 1 light off, the rest work. The light first in line with dt-355 doesn’t turn on with the other lights. But when manually hit the swi

Asked by: Anonymous
Questions to Consider: 1. Circuit Setup: -Are they wired in parallel from the same electrical circuit? 2. Settings: -Have any settings on either device been modified from their factory defaults? 3. Independent Functionality: -Have you tested each device individually to ensure they function correctly on their own? Troubleshooting Steps: 1. Verify Circuit Connection: -Ensure both the DT-355 and PW-301 are connected to the same circuit and wired correctly in parallel if they are controlling the same fixtures. 2. Check Settings: -Reset both devices to their factory settings and see if the issue persists. Sometimes, setting changes can lead to unexpected behavior. 3. Test Separately: -Disconnect one device and test the other in isolation. Repeat for the second device. This can help identify if one of the devices is causing the problem. 4. Contact Technical Support: -If the above steps do not resolve the issue, it might be best to reach out to Technical Support. Provide us with detailed information about your setup and the steps you've already taken. We can offer more customized solutions based on your specific situation. By systematically addressing each of these points, you should be able to identify and resolve the issue with your line voltage sensors.
Answered by: Tier 1 Tech Support
Date published: 2024-06-20

Is the watt stopper DT -355 suitable for damp locations? ? If not is there a model availability that is ? 

Asked by: Anonymous
No, the DT-355 is not suitable for damp locations. Please see the cutsheet for the HB30xW series sensors @ https://www.legrand.us/search/?text=HB3x0W. These are the sensors we do offer for wet locations.
Answered by: Justin
Date published: 2024-04-16

TEST CERTIFICATE FOR THIS PRODUCT

Asked by: MARK
Please see the image attached.
Answered by: Justin
Date published: 2024-03-28

 Is the DT-355 compatible with Lutron Homeworks when using a QSE-IO Interface?

Asked by: JF
The DT-355 is simply a line voltage, dual-technology occupancy sensor. You would need to contact Lutron to review their system requirements.
Answered by: Tier 1 Tech Support
Date published: 2024-01-30

I need sensors for two stairwells in a commercial building. I would like to put a sensor at both ends of the stairs. I have 120v line voltage and have LW wire run in parallel to the switch location from the sensor location. What sensor is best?

Asked by: Kevin Dettmering
For Low Voltage installation, I'd recommend the DT-305 sensors, LVSW-101 switch, and BZ-150 power pack. This would require low voltage wiring from the sensor locations and switch location to the power pack. If you wanted a line voltage solution, take a look at the DT-355 sensors, but keep in mind that they won't interface with a low voltage switch.
Answered by: Tier 1 Tech Support
Date published: 2024-01-30

Are either sensors replaceable?

Asked by: JeffS
the actual PIR and/or Ultrasonic sensors within the DT-355 are not field replaceable. If the sensor(s) have been damaged, the entire DT-355 would have to be replaced.
Answered by: Tier 1 Tech Support
Date published: 2024-01-22

Can you wire them together like the low voltage sensors 

Asked by: Derek68
Hi Derek, Multiple sensors can be wired in parallel. Please refer to the installation instructions for wiring diagram.
Answered by: Tier 1 Tech Support
Date published: 2024-01-18
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