The most common use of pyroelectric detectors is for motion detection. Inexpensive pyroelectric ceramic sensors generally suffice for this purpose. Other applications include the non-dispersive infrared gas analysis (NDIR gas analysis) and infrared flame sensing and monitoring. In these areas, mainly high-quality, single-crystal lithium tantalate (LiTaO3) is used as a pyroelectric material. This also gives a long-term stable performance for the large signal-to-noise ratio.
The use of pyroelectric detectors for spectroscopy or radiometry is also possible.