Sensing principle and application of PIR motion sensor alarm

26-05-15

Infrared light, has the properties of reflection, refraction, scattering, interference, absorption, etc., so it is often used for non-contact temperature measurement. Since the infrared sensor does not need to be in direct contact with the measured object during measurement, and there is no friction; and the infrared sensor has the advantages of high sensitivity and fast response, so most of the current sensor alarms and sensor anti-theft devices in the market are built-in infrared sensor.

If we need to install and use the device with alarm function in a specific place, the infrared motion sensor alarm is our best choice, because we only need to install the motion sensor alarm, and adjust its lens to aim at a certain sensing area, an alarm function is triggered whenever a person or animal passes through the sensing area.

This type of product is easy to be installed in daily life, simple to use and has high sensitivity, so it can meet the needs of most home security, office security, commercial security and other places of use.

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