PIR Motion Detection Sensor HC-SR505

The HC-SR505 MINI PIR Motion Sensor offers reliable human motion detection in an ultra-compact form factor. Designed for low-power and space-constrained projects, this sensor is a go-to for battery-operated devices, smart lighting, and DIY automation systems.

Despite its small size, the HC-SR505 delivers accurate detection within a 3-meter range, thanks to its pyroelectric sensor and integrated circuitry. With built-in repeatable triggering and ultra-low quiescent current, it’s tailor-made for energy-efficient applications like wireless alarms, toys, and portable gadgets.

Features:

• Sensor Type: Passive Infrared (PIR) / Pyroelectric

• Operating Voltage: 4.5V–20V DC

• Output: Digital (High: 3.3V, Low: 0V)

• Trigger Mode: Repeatable (default)

• Detection Range: Up to 3 meters, ~100° cone

• Delay Time: ~8 seconds (non-adjustable)

• Quiescent Current: <50μA (ideal for battery use)

• Size: ~23mm × 10mm × 5mm

• Mounting: Compact form factor for tight spaces

Applications:

• Battery-powered motion-activated lights

• Security systems and alarms

• Smart home automation

• Toys and interactive devices

• Industrial automation triggers

*image shown is a representation only.