- Operating Voltage:3~10Volt
Description:
The pyroelectric infrared sensor detects infrared radiation by making use of the property that the polarization of pyroelectric materials changes with temperature.Materials called ferroelectrics absorb thermal energy,which changes spontaneous polarization generating a surface electrical charge.The Charge is propotional to polarization change.The phenomenon is called the Pyroelectric effect.A pyrosensor using fine ceramic materials can detect even the slightest infrared energy change,such as that from a human body.
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