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Pyroelectric sensors (PIR by Passive Infra red) have a very special characteristic, and that is that they detect the movement of entities within a specific temperature range, in this range is that of humans and animals with a temperature similar to that of of the human being.

This characteristic allows us to use them in alarm or home automation systems with very good results.

HC-SR501 Pyro Electric Motion Sensor

  • Voltage range: 4.5 - 5.5V

    Delay time: 5 to 200 seconds adjustable

    On time: 2.5s (ex factory) adjustable

    Sensing angle: 100 °

    Working temperature: -15 to + 70 ° C

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