Occupancy & Vacancy Motion Sensors
Lighting can account for 20% of energy use in a building with high activity. This is when energy savings becomes very important to business owners. Simply adding lighting controls to your existing lighting application can easily reduce that portion by 25%. Occupancy sensors are a standard means for saving energy, increasing security, extending lamp life, and decreasing maintenance costs.
Many occupancy sensors use Passive Infra-Red (PIR) as they are best for detecting major activity like an occupant walking through a space. This sensor works by detecting movement of heat sources in its direct range of view. Many of the newer sensors, such as the ones offered on our site, have a 180 degree range of detection and an ultra-efficient LED light source and optical design.
Ultrasonic technology in occupancy sensors is perfect for the detection of minor movements, such as typing at a computer for an extended period of time. Ultrasonic sensors work by releasing a pulse into a space. The pulse reads differently when it ricochets back if there is movement in the area.
Vacancy Sensors – What’s The Difference?
Vacancy sensors will monitor your space to turn lights off if vacancy is detected for an indicated length of time. It has been shown that energy use decreases when we control our lighting needs and access to daylight when needed. Using standard occupancy sensors that are set to “automatically on” is perfect for spaces with little natural light. If your space has a lot of natural daylight a vacancy sensor may be preferable.