HC-SR501 PIR Motion Sensor Module Detects Human Movement, Motion, and Infrared Changes Pyroelectric Passive Infrared Sensor for Security

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Package Includes
1 X PIR Motion Sensor
Manufactured in China
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FAQ
The sensor detects infrared radiation (IR) emitted by humans and animals. When a moving object with heat (like a person) passes within its detection range, the sensor triggers a signal, making it ideal for motion detection.
The sensor can detect motion within a range of 3 to 7 meters (adjustable via a potentiometer), and the detection angle is approximately 120 degrees.
The sensor has a digital output, which is either HIGH (when motion is detected) or LOW (when no motion is detected). It can be connected to microcontrollers like Arduino to trigger actions like alarms or lights.
The HC-SR501 operates on a voltage range of 4.5V to 20V, making it compatible with many 5V and 12V systems.
Yes, the delay time (the amount of time the output remains HIGH after motion is detected) can be adjusted from 5 seconds to 5 minutes using a potentiometer on the module.
Connect VCC to the 5V pin, GND to ground, and OUT to a digital input pin on the microcontroller. When motion is detected, the output pin will go HIGH, signaling movement.
The sensor is typically used indoors, but with proper housing or protection from weather, it can be used outdoors in security systems, provided it's shielded from direct exposure to moisture.
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