Hw-416-b Pir Sensor Datasheet Now

The HW-416-B is a passive infrared (PIR) motion sensor module built around the signal processing IC. It is designed for Arduino, Raspberry Pi, ESP32, and other microcontroller (MCU) or relay-based projects. Typical applications include automatic lighting, security alarms, human-activated displays, and energy-saving systems.

After powering the HW-416-B for the first time, it needs 30–60 seconds to stabilize. During this period, it may output random triggers – this is normal. hw-416-b pir sensor datasheet

Always allow 60 seconds after power-up before testing. And remember – this sensor detects motion, not presence. For true presence sensing, combine it with a time-of-flight or ultrasonic sensor. The HW-416-B is a passive infrared (PIR) motion

// PIR motion sensor test int pirPin = 2; int ledPin = 13; After powering the HW-416-B for the first time,

Unlike some older modules, the HW-416-B typically includes an on-board 3.3V regulator, allowing operation up to 12V without damaging the PIR sensor element.