Once motion is detected, the output stays HIGH for the set delay and then goes LOW, even if movement continues.
Turning off PC monitors or HVAC systems in unoccupied offices. 6. Integration Tips hw-416-b pir sensor datasheet
The module typically features three pins, usually marked on the PCB or under the white Fresnel lens: Power input ( is recommended for most applications). OUT: Digital output signal ( 3.3V3.3 cap V GND: Ground connection. On-Board Adjustments Once motion is detected, the output stays HIGH
💡 PIR sensors require a "warm-up" period of about 30 to 60 seconds after powering on to calibrate to the environment's infrared signature. During this time, you may get false triggers. Integration Tips The module typically features three pins,
Choose the HW-416-B for low-power IoT sensors or motion-activated sound effects. Choose the HC-SR501 for hallway lights or alarm systems requiring a long output pulse.