The pyroelectric infrared sensor is an infrared sensor that uses the pyroelectric effect of ferroelectric ceramic and can detect temperature changes. The slight infrared rays emitted from the human body can also be detected sharply.

Thermopile, on the other hand, is a thermal infrared sensor that generates a thermoelectromotive force according to the amount of incident energy when it receives infrared radiation emitted from an object, and can detect the absolute amount of energy (temperature).

The SO1-V A2 flame detector is based on the pyroelectric effect of LiTaO3 single crystal, combined with ultra-low noise JFET and silicon substrate narrow band filter. The detector have good anti-interference ability and high sensitivity at the same time.This type of detector can be used in small space flame detection.

The SO1-V A1 flame detector is based on the pyroelectric effect of LiTaO3 single crystal, combined with ultra-low noise JFET and silicon substrate narrow band filter. The detector have good anti-interference ability and high sensitivity at the same time.This type of detector can be used in long distance flame detection.

Sapphire filter, because sapphire has the cut-off characteristic of long wave infrared, the detector has both high signal amplitude and anti-interference performance, and is often used in fire water cannon.Sapphire substrate filter will be the development trend of pyroelectric flame detector in the future.