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Self-adhesive backing
LED Indicator: LED off indicates the relay is off
People counting and presence detection
T90 automotive-grade form factor (ISO 280 standard)
HC-SR505 Mini Infrared PIR Motion Sensor — Compact 3-Pin socket Self-adhesive backingHC SR505 Mini Infrared PIR Motion Sensor Compact 3 Pin The HC SR505 is a miniaturized passive infrared (PIR) motion sensor ideal for space constrained projects where the larger HC SR501 won't fit. Despite its tiny footprint, it reliably detects human motion up to 3 meters away with a 100 detection angle. Perfect for wearables, compact security devices, and embedded automation projects with Arduino or ESP32. Technical Specifications Parameter Value
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