Datasheet: Hw-416-b Pir Sensor

Output goes high, then low, regardless of continued motion. 6. Arduino Example Code The following code detects motion and lights up an LED.

| 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) | hw-416-b pir sensor datasheet

The HW-416-B is an excellent choice for any system that needs to detect the presence or movement of people. Common applications include: Output goes high, then low, regardless of continued motion

If you are looking for a standard PDF datasheet for the HW-416-B, you likely won't find one from a major manufacturer. These sensors are generic modules produced by various Chinese factories. | Pin Number | Pin Name | Description

If the sensor detects motion while the output is already HIGH , it resets the internal timer. The output will remain HIGH continuously until the target stops moving and the delay time elapses. This is the preferred mode for automated room lighting. 4. How the HW-416-B Works Internal Mechanics

Turning the Sx potentiometer clockwise increases the detection distance (up to ~7m). Turning it counter-clockwise reduces it (down to ~3m).