PIR technology senses occupancy by detecting the difference between heat emitted from the human body in motion and the background space. Relying on a clear line-of-sight view, passive infrared sensors make 100 percent coverage cut off possible. These sensors utilize a unique fresnel lens which divides the coverage area into zone, enhancing detection of small movement. Using the Doppler principle, ultrasonic sensors work by bouncing ultrasonic sound waves off objects in an area and measuring the time it takes for the waves to return. Movement by a person in the area causes the sound waves to return at a changed frequency, resulting in a Doppler shift and occupancy detection.

WattStopper® Ceiling Mount Occupancy Sensor, Series: DT Series, 24 VAC/VDC, 43 mA, Passive Infrared/Ultrasonic Sensor, 2000 sq-ft Coverage, 5 to 30 min Delay, LED Lamp, 40 kHz Response, Flying Lead, Automatic ON/OFF Control Output, Ceiling/Swivel Bracket/Wall Mount, 35 deg C, Plastic, White, 4.4 in H x 3.4 in W x 2 in D

• Brochure https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1503997021737.pdf
• Brochure https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/http://www.ideadigitalcontent.com/files/NEURBRO/103415.pdf
• Installation Instructions https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1537662723247.pdf
• Installation Instructions https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/WattStopper_DT_200_Installation_Instructions.pdf
• Installation Instructions https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://www.ideadigitalcontent.com/files/11304/ID-INS-v1-ws-install-dt200_21032r2.pdf
• Specification Sheet https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1520583198945.pdf
• Specification Sheet https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/WattStopper_DT_200_Datasheet.pdf
• Specification Sheet https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://www.ideadigitalcontent.com/files/11304/ID-SPE-v1-dt-200-series-dual-technology-ceiling-sensors-cut-sheet.pdf
• Technical Drawing http://www.wattstopper.com/products/commercial-occupancy-sensors-and-controls/ceiling-or-wall-mount-sensors/dt-200.aspx
• Video Link https://www.youtube.com/watch?v=qsVCQV9uGKM
• Warranty https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1520617376907.pdf
• Warranty https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://www.ideadigitalcontent.com/files/NEURWAR/103450.pdf

• 95% RH, non-condensing, for indoor use only environmental conditions
• This dual technology ceiling sensor combines PIR and ultrasonic technologies into one unit to achieve precise coverage in detecting occupancy
• Walk through mode turns lights OFF three minutes after the area is initially occupied - ideal for brief visits such as mail delivery
• Detection signature analysis eliminates false triggers and provides immunity to RFI and EMI
• Sensors work with low voltage momentary switches for manual control
• LEDs indicate occupancy detection
• Eight occupancy logic options provide the ability to customize control to meet application needs
• Swivel mounting bracket for convenient corner mounting to wall or ceiling
• With light level, isolated relay
• 1 A at 24 VAC/VDC load rating