HC-SR501 PIR Motion Sensor Module (HW-SR501) is a high-sensitivity infrared human body detection module designed for reliable, adjustable motion sensing in Arduino, ESP32, Raspberry Pi, and microcontroller-based security and automation systems.
Key Features:
- Adjustable detection range (1–10m) — via onboard potentiometer
- Adjustable delay time (0–300s) — controls how long output stays HIGH after detection
- Selectable trigger modes — repeatable or non-repeatable via onboard jumper
- 100° wide sensing angle — broad coverage without blind spots
- Ultra-low standby current (<50µA) — ideal for battery-powered applications
- Wide operating voltage (3.7–20V) — works with 5V Arduino, 3.7V LiPo, and 12V systems
- 3V digital output — direct connection to Arduino digital input pins
- Compact 32×24×7mm form factor — easy enclosure and ceiling mounting
- Infrared lens 8002-2B — optimised for human body heat detection
- Passive infrared sensing — no RF emissions, no interference
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