Hw-416-b Pir - Sensor Datasheet

The HW-416-B PIR sensor module is widely available from electronics retailers and online marketplaces. Modules typically include:

The HW-416-B is more than just a motion detector; it is an energy-efficient trigger. While newer, more expensive "radar" sensors (like the RCWL-0516) can detect motion through walls, the HW-416-B remains the reliable workhorse for line-of-sight detection. It is cheap, tunable, and consumes so little power that it might just be the longest-lasting component in your next battery-operated build.

If you hold the board with the white dome (Fresnel lens) facing up and look at the pin header from the side, the pinout is generally structured as follows (always verify with the silkscreen markings on your specific board revision): hw-416-b pir sensor datasheet

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:

| Pin Number | Pin Name | Description | | :--- | :--- | :--- | | 1 | | Power input (5V – 20V DC) | | 2 | OUT | Digital output: HIGH when motion detected, LOW when idle | | 3 | GND | Ground (0V) | The HW-416-B PIR sensor module is widely available

The HW-416-B features two variable resistors (potentiometers) on the board that allow you to tune its behavior without rewriting a single line of code.

The HW-416-B is a digital pyroelectric PIR motion sensor module. It uses a Fresnel lens to focus infrared radiation onto a pyroelectric detector element. Any change in IR radiation (caused by a moving warm body like a human or animal) triggers a digital output signal. It is cheap, tunable, and consumes so little

What are you using? (ESP32, Raspberry Pi, etc.)

Clockwise rotation increases the output high duration; counter-clockwise decreases it. Trigger Mode Jumper (L / H):

The HW-416-B features a highly simplified 3-pin interface, making it exceptionally easy to wire to any microcontroller. Pin Configuration