An infrared detector is a detector that reacts to infrared (IR) radiation. The two main types of detectors are thermal and photonic (photodetectors)....

are commonly called simply "PIR", or sometimes "PID", for "passive infrared detector". The term passive refers to the fact that PIR devices do not radiate...

redirect targets Infrared detector – detector that reacts to infrared (IR) radiationPages displaying wikidata descriptions as a fallback Infrared photography –...

created from the near IR images. Infrared (IR) or wideband infrared (1.1 μm and higher) flame detectors monitor the infrared spectral band for specific patterns...

A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector. It is non-dispersive in the fact that no...

thus the name passive infrared. This distinguishes it from the electric eye for instance (not usually considered a motion detector), in which the crossing...

hotter objects emit more infrared energy than colder ones, it is relatively easy to identify them with an infrared detector, day or night. Hence, the...

and infrared light. Both fields also use solid state detectors, though the specific type of solid state photodetectors used are different. Infrared light...

wireless door or window contacts as sub-components. The passive infrared (PIR) motion detector is one of the most common sensors found in household and small...

Fourier-transform infrared spectroscopy (FTIR) is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid, or gas...