PIR Motion Detector Sensor Module HC-SR501
Description:
The PIR (Passive Infrared) Motion Detector Sensor Module HC-SR501 is a commonly used sensor module for detecting motion in various electronic projects. Here's a description of its features:
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Detection Method: The HC-SR501 sensor module detects motion by measuring changes in infrared radiation emitted by objects within its field of view. It utilizes a passive infrared sensor, which detects variations in heat emitted by objects as they move across the sensor's detection area.
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Detection Range: The sensor typically has a detection range of up to several meters, depending on factors such as sensitivity settings and environmental conditions.
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Sensitivity Adjustment: Many HC-SR501 modules feature a potentiometer for adjusting the sensitivity of the sensor. This allows users to fine-tune the sensor's responsiveness to motion, making it suitable for different applications and environments.
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Time Delay Adjustment: The module often includes another potentiometer for adjusting the time delay between detecting motion and triggering an output signal. This feature allows users to control the duration of the output signal once motion is detected.
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Operating Voltage: The HC-SR501 sensor module typically operates within a voltage range of 4.5V to 20V DC. This wide voltage range makes it compatible with a variety of power sources, including batteries and regulated power supplies.
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Output Signal: When motion is detected, the sensor module typically produces a digital output signal, which can be used to trigger further actions, such as activating lights, alarms, or other devices.
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Operating Modes: Some HC-SR501 modules offer additional operating modes, such as repeatable trigger mode and non-repeatable trigger mode. In repeatable trigger mode, the sensor will output a signal as long as motion is detected within its detection range. In non-repeatable trigger mode, the sensor will only output a signal once per detected motion event.
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Applications: The HC-SR501 sensor module is commonly used in security systems, lighting control systems, automatic doors, and other applications where motion detection is required.
Overall, the HC-SR501 PIR Motion Detector Sensor Module provides a reliable and cost-effective solution for motion sensing applications, with adjustable sensitivity and time delay settings to suit various project requirements.
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