Track occupancy detectors are needed for hidden yards and other sections of track that are hard to see, but they are also necessary for block operation. The circuit described here uses an LED to ...

The Thermopile Based Occupancy Detector is a subsystem solution that uses a thermopile array to sense the body heat of people within its field of view and estimate the number of people present. This ...

It’s a gnawing frustration of modern office life. You’re sitting quietly — too quietly — in an office or conference room, and suddenly the lights go off ...

The Control Pro Series consists of passive infrared, ultrasonic, and multi-tech occupancy detectors The Control Pro Series consists of passive infrared (PIR), ultrasonic, and multi-tech (PIR, ...

It's a gnawing frustration of modern office life. You're sitting quietly — too quietly — in an office or carrel, and suddenly the lights go off. Grrr! Installed ...