Key Takeaways Infrared IR waves are part of the electromagnetic spectrum crucial for various applications by detecting thermal energy emitted by objects IR sensors can be classified as active emitting ...
Optex SL-350QDP is a quad beam active infrared sensor with 4 channel selectable frequency for perimeter security. It also features 100m detection range, anti-frost hood design, and easy-to-see vivid ...
Optex SL-650QN is a quad beam active infrared sensor for perimeter security. It also features high power Quad beams with high grade aspherical lenses. Optex TWD-204RR pre-built beam tower Optex ...
(Passive InfraRed sensor) A device used to detect ... This passive method is not as reliable as "active" motion sensors that either bounce back a radar signal or transmit light to a photodetector ...