The line voltage fixture mount occupancy sensor series delivers a comprehensive solution for high bay and industrial lighting control. These sensors feature a universal lens that accommodates high bay, low bay, and aisleway applications, eliminating the need to classify spaces by fixture type. The integrated chase nipple with mounting tabs simplifies installation by securely attaching the sensor to standard fixture knockouts, reducing time and effort during setup. The sensors utilize digital passive infrared technology and advanced signal processing to provide precise and reliable motion detection, even in large or obstructed areas. Optional integrated acoustic detection enhances performance in spaces where occupant motion may be limited or partially blocked.
Basic operation relies on detection of infrared energy radiated by occupants within the sensor’s field-of-view. Once motion is identified, the internal relay activates the connected lighting. An internal timer maintains lighting during brief periods of inactivity, resetting each time motion is detected. Optional daylight detection can dim or switch off controlled lighting according to ambient light levels, optimizing the balance between natural and artificial light in a space. These sensors are self-contained units that directly switch 120/277 VAC and are typically used to control single fixtures. For larger installations, multiple sensors can be employed to extend coverage across expansive areas.
Applications include warehouse storage areas, distribution centers, garages, and manufacturing facilities. The universal lens design provides detection of walking-sized motion or larger objects, such as forklifts, at mounting heights ranging from 8 to over 40 feet. Detection coverage improves when occupants cross the field of view at an angle rather than directly toward the sensor, with a typical coverage radius approximating 1.2 times the mounting height.
The sensors offer digitally controlled passive infrared detection with optional dimming outputs for configurable high, low, or off operational modes. A snap-in chase nipple allows for rapid installation, while an integrated bracket positions the sensor below the fixture. Electronically timed switching is suitable for LED fixture control, and a test mode with adjustable time delays supports verification of sensor functionality.
Physically, the sensors measure 4.00 inches in diameter by 3.00 inches in height and weigh 5.00 ounces, with a matte white finish suitable for commercial and industrial environments. Electrical characteristics include multi-volt operation from 120 to 277 VAC, with load capacities of 800 W at 120 VAC, 1000 W at 208 VAC (2-phase), and 1200 W at 277 VAC. Compatible load types include tungsten, fluorescent ballast, and LED fixtures. Environmental tolerances range from 32°F to 122°F (0°C to 50°C) with 0–95% non-condensing relative humidity, suitable for indoor use. The sensors meet ASHRAE 90.1 and CEC Title 24 code requirements.
Operational settings include primary occupancy time delays from 30 seconds to 30 minutes, secondary time delays for dim-to-off functionality, adjustable ambient light thresholds, and configurable high and low trim levels for 0–10 V dimming. LED intensity is selectable, and the operational mode can include on/off or high/low/off sequences depending on model and configuration.
Integrated photocell operation is available on select models, automatically switching lights on or off based on ambient light levels, ideal for spaces with skylights, windows, or large bay doors. NightLight operation maintains a dimmed level during unoccupied periods at night while fully turning off fixtures during daylight conditions. High/low operation allows 0–10 V dimmable fixtures to step down to a low setting after the occupancy time delay expires, with an additional configurable time delay to switch the fixture completely off. Daylight harvesting sensors automatically adjust dimmable lighting levels according to detected ambient daylight, with options to fully turn off fixtures or maintain a minimum dimmed level to match overall desired lighting.
These line voltage fixture mount occupancy sensors offer flexible control, precise detection, and multiple operational modes suitable for high bay and industrial lighting environments, providing reliable performance in warehouses, manufacturing areas, garages, and distribution centers.
https://www.sensorworx.com/line-voltage-fixture-mount-sensors/
