Occupancy Sensors

Lutron Occupancy Sensor and Wall

Many facilities have areas that are lighted even when unoccupied, resulting in wasted energy. One of Graybar's energy-efficient lighting solutions is to install occupancy sensors.

Occupancy sensors are switching devices that serve three basic functions: automatically turn lights on when a room becomes occupied, keep the lights on without interruption while the controlled space is occupied and turn the lights off within a preset time period after the space has been vacated.

Occupancy sensors consist of a motion detector, an electronic control unit, a controllable switch (relay) and a power supply. The motion detector uses ultrasonic, passive infrared or dual technology sensors to detect the presence or absence of occupants in the space and sends that back to the control unit. The control unit then automatically adjusts the lighting dependent on the presence or absence of occupants.

Areas with intermittent occupancy such as conference rooms or restrooms are well-suited to occupancy sensors. Use of occupancy sensors can result in lighting energy cost savings of 13-90 percent if they are calibrated, wired correctly and placed correctly.

Contact a Graybar Lighting Consultant to learn more about occupancy sensors offered through Graybar.