The HC-SR501 PIR Motion Detector Sensor Module detects motion across a 140° angle at 3 to 7 metre range, with adjustable delay time from 5 to 200 seconds, operating from 4.5V to 20V at just 0.06mA average current draw across -10°C to 70°C. The pir motion sensor works on a passive infrared principle — its detector senses changes in infrared radiation as a warm object like a person or animal moves through its field of view, distinguishing this motion from the static background infrared level of the room.
The pir sensor price reflects two onboard potentiometers that let users tune the hc sr501 pir motion sensor’s behavior — one adjusts detection sensitivity (effectively the range, up to the rated 3-7m), and the other adjusts delay time, controlling how long the digital output stays HIGH after motion is last detected before resetting. This pir sensor hc sr501 wide voltage tolerance (4.5-20V) makes it flexible for both battery-powered 5V Arduino projects and higher-voltage 12V security system integrations without needing a separate regulator.
One practical trade-off: as a pir sensor module, this sensor detects motion based on infrared changes rather than simple presence, so a person standing perfectly still for extended periods may eventually stop triggering new detection events. This StemVolt sensor is well-suited for engineers building automatic security lighting and practical motion-activated electronics projects.
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Features:
- 140° wide detection angle covers large room or hallway areas
- Adjustable sensitivity and delay time via onboard potentiometers
- 3-7 metre range suits room-scale and outdoor security applications
- 4.5V to 20V wide voltage range for flexible power options
- 0.06mA ultra-low current draw ideal for battery-powered projects
Technical specifications:
 Applications:
- HC-SR501 used for Arduino automatic security light trigger build
- College project uses pir motion sensor for motion detection demo
- Home security uses pir sensor price for India entry alert system
- Automatic door uses hc sr501 pir motion sensor for hands-free opening
- Robot uses pir sensor module for human presence detection navigation
Package includes:
- 1 x HC-SR501 PIR Motion Detector Sensor Module
Vivaan Kapoor –
Quick delivery with bubble wrap packing ensured safe arrival, while technical support was available for sensor setup and project integration assistance.
Reyansh Joshi –
Original product received
Saisha Reddy –
Will order again
Myra Joshi –
This module provides reliable human motion detection and is ideal for security systems, automation projects, school experiments, and Arduino-based applications