![]() Airflow, HVAC ducts and heat sources must also be taken into consideration because if any are too close to the sensor, they can inadvertently trigger it. Also consider the size and shape of the area and the type of activity taking place in the space. First, the space requires an unobstructed line-of-sight for accurate detection because any obstructions that block the sensors’ view can affect the detection of motion. Motion Sensor switches use passive infrared (PIR) technology to detect movement so there are a few factors to take into consideration when installing them in the home. ![]() How do motion sensors light switches work? In some States/jurisdictions like California, the building code requires them. Vacancy models require the user to manually turn the lights on and will automatically turn lights off after a set period or when motion is no longer detected. An occupancy sensor will automatically turn lights on when motion is detected, and off after a set period when motion is no longer detected. Motion sensor light switches provide hands-free lighting for added safety and convenience. Occupancy/Vacancy Sensors Frequently Asked Questions Why would I want to use a motion sensor? No neutral design is optional for retrofit applications.Specifically designed to handle today’s high inrush electronic ballast loads and offer unmatched durability and service. Relay switches at the zero crossing point of the AC power curve to ensure maximum contact life and compatibility with electronic ballasts.Compatible with both electronic and magnetic ballasts. One unit can be used for 120V through 277V lighting.Presentation Mode feature for slide or film presentations allows push buttons to turn lights OFF and keep them OFF while the room is occupied.Vacancy confirmation - when the time out expires and the lights turn OFF a 30 second vacancy confirmation exists to turn the lights back ON.Light sensor enables the load hold-OFF feature once level has been set.Light Sensor Adjustable Ambient Light Override ranges from approximately 2 foot-candles (20 lux) to 500+ foot-candles (5000+ lux) to prevent lights from turning ON automatically during periods of ample natural light, increasing energy savings.Allows customized adjustments to maximize energy savings. Time Delay adjustment for delayed-OFF time set-tings of 30 seconds (for walking test), 10 minutes, 20 minutes, and 30 minutes. ![]() To comply with T24, red LED indicator light flashes when sensor detects motion to verify detection is active.Manual-ON/auto-OFF mode for installations where manual-ON switching is required but auto-OFF switching is still desired for CEC Title 24 energy savings.Horizontal field-of-view may be adjusted between 180° and 60° of arc by using integral blinders located on either side of the lens. ![]() Designed with an extensive “minor motion” area where even slight body movements will be detected.
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