| Pin | Name | Description | |-----|------|-------------| | 1 | VCC | Power input (4.5V – 20V DC) | | 2 | OUT | Digital output (HIGH = motion detected, LOW = idle) | | 3 | GND | Ground (0V) |
. It is designed to detect motion by sensing changes in infrared radiation emitted by objects like human bodies. Key Technical Specifications Based on documentation from Tayda Electronics Popular Electronic hw-416-b pir sensor datasheet