The HW-416-B has two trimmer potentiometers and one jumper, which are essential for configuring behavior. Understanding these is critical to using the datasheet effectively.
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. hw-416-b pir sensor datasheet
Key difference from HC-SR501: While the HC-SR501 is widely cloned, the HW-416-B is often cited as a revision or variant with a similar circuit but sometimes different component tolerances and a slightly modified lens. The "B" designation typically indicates a board revision with a white plastic case and a three-pin header pre-soldered at a 90-degree angle. Function: Adjusts the detection distance and sensitivity to
The HW-416-B is one of the most popular and cost-effective Passive Infrared (PIR) motion sensor modules available on the market. Often recognized by its white circular housing and three-pin male header, this board is a staple in Arduino, Raspberry Pi, and ESP32 projects. Despite its widespread use, finding a consolidated, accurate datasheet for the HW-416-B can be challenging, as it is frequently confused with the HC-SR501. Onboard Adjustable Components The HW-416-B has two trimmer
This article serves as a complete HW-416-B PIR sensor datasheet, covering every technical detail you need: electrical characteristics, pin configuration, sensitivity adjustment, time delay settings, wiring diagrams, and troubleshooting tips.