The sensor operates by detecting infrared radiation emitted by the human body. Operating Voltage: 4.5V to 20V DC (5V recommended). Static Current: Output Signal:
On the corner of the module, you will find three solder pads or a jumper labeled and L . hw-416-b pir sensor datasheet
⚠️ The HW-416-B uses two potentiometers. On some boards, the left is SENS and right is TIME . Verify with your specific board silkscreen or by testing. The sensor operates by detecting infrared radiation emitted