Hw-416-b Pir Sensor Datasheet !exclusive! May 2026

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. HW-416-B Technical Specifications (Datasheet Summary) Below are the official and field-tested specifications for the HW-416-B.

int pirPin = 2; int ledPin = 13; void setup() Serial.begin(9600); pinMode(pirPin, INPUT); pinMode(ledPin, OUTPUT); hw-416-b pir sensor datasheet

| Parameter | Value / Range | | :--- | :--- | | | DC 5V – 20V (Standard: 5V for microcontrollers) | | Quiescent Current | < 50 μA (microamps) | | Output Signal | Digital (High/Low) – 3.3V / 5V TTL compatible | | Output High Level | Vcc – 0.3V (when triggered) | | Output Low Level | 0V (idle state) | | Detection Range | Up to 7 meters (adjustable) | | Detection Angle | < 120° (cone-shaped, via Fresnel lens) | | Time Delay Adjust | 0.3 seconds to 5 minutes (via onboard potentiometer) | | Sensitivity Adjust | 3m to 7m (via onboard potentiometer) | | Trigger Modes | Single (Non-repeatable) / Repeatable (Select via jumper) | | Operating Temperature | -15°C to +70°C | | Dimensions | 32mm x 24mm x 18mm (excluding lens) | | Lens Type | Standard PIR Fresnel lens (white/translucent) | HW-416-B Pinout and Connector Details The HW-416-B module features a standard 3-pin male header (2.54mm pitch). The pin labeling is often printed on the back of the PCB. While the HC-SR501 is widely cloned, the HW-416-B

Introduction 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. int pirPin = 2; int ledPin = 13; void setup() Serial

Whether you are building a security system, an automatic door, or a smart home sensor, understanding the HW-416-B’s configuration options ensures optimal performance. Bookmark this page as your go-to reference, and always remember to allow the 30-second warm-up period before testing.

This article serves as a complete , covering every technical detail you need: electrical characteristics, pin configuration, sensitivity adjustment, time delay settings, wiring diagrams, and troubleshooting tips. What is the HW-416-B? 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.