The HC-SR501 PIR Motion Detector Sensor Module detects infrared radiation changes caused by moving people or animals within a 3 to 7 metre range. The hc sr501 pir motion sensor outputs a signal on its digital pin when motion is detected and returns LOW after the set delay time expires. It runs on 4.5V to 20V and draws only 0.06mA average, making it practical for long-running battery setups.
The pir sensor hc sr501 has two onboard potentiometers for adjusting sensitivity and delay time from 5 to 200 seconds. A non-obvious detail is that the sensor needs a 30 to 60 second warm-up after power-on before it reads reliably. Placing it near heat sources like lamps causes false triggers since PIR responds to infrared temperature differences, not visible light.
Hobbyists, and students use for security, the pir sensor module with over a single GPIO pin. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.
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Features:
- Operating voltage of 4.5V to 20V suits battery and regulated supplies
- Detection angle of 140° covers a wide arc from a single mounting point
- Delay time adjustable from 5 to 200 seconds using the onboard trimmer pot
Technical specifications:
| Specification | Details |
|---|---|
| Sensor Type | PIR Motion Detector |
| Model | HC-SR501 |
| Operating Voltage (V) | 4.5V to 20V |
| Avg. Current Used (mA) | 0.06 |
| Delay Time | 5 to 200s |
| Distance Measure (cm) | 300 ~ 700° |
| Range (M) | 3 ~ 7 meter |
| Detection Angle | 140° |
| Operating Temperature (°C) | -10℃ ~ +70℃ |
Applications:
- Automatic greeting system triggers a buzzer when motion is detected within 7 metres range
- Energy-saving office fan controller uses pir motion sensor to turn off the fan on inactivity
- Garden intruder alert uses the 140° detection angle to cover a wide outdoor area at night
Package includes:
- 1 x HC-SR501 PIR Motion Detector Sensor Module
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