Hw416b Pir Sensor | Datasheet Better

Since the "HW-416B" is often confused with the HC-SR501 (they share the same BISS0001 chip and lens), this post focuses on clarifying the actual specs and how to use it effectively.

Suggested post body: "Hi — I have an HW416B PIR motion sensor but can't find an official datasheet. I need: operating voltage, output type (active high/low), sensitivity/range, timing (retrigger/hold) and pinout. If anyone has a datasheet or test measurements, please share. Also welcome recommendations for better-documented replacement PIR modules compatible with 3.3–5V microcontrollers."

The HW416B PIR sensor datasheet provides a good overview of the sensor's specifications, features, and application information. While there is room for improvement, the datasheet is generally clear and concise, making it easy for users to understand and work with the sensor. With some additional information and examples, the datasheet could be even more helpful for designers and engineers working with the HW416B PIR sensor.

void motionISR() motionDetected = true;

void loop() val = digitalRead(PIRpin);

The HW416B is a passive infrared sensor module designed for human body detection. It is widely used in security systems, automatic doors, and lighting control applications. The sensor is highly sensitive, reliable, and easy to use.

RTC_DATA_ATTR int bootCount = 0;

Serial.println("Entering deep sleep for 5 seconds..."); esp_deep_sleep_start();

What makes this specific module "better" for hobbyists is the level of physical control it offers without needing to rewrite code. Pir Motion sensor Logs Motion detected when no motion