Hw416b Pir Sensor Datasheet Better ✔

Unlike the HC-SR501, many HW-416B modules do not have 5V tolerant logic outputs. The output pin is 3.3V. Do not connect it directly to a 5V-only Arduino input without a level shifter, or you may damage the sensor over time.

The official HW416B datasheet (if you can find it) is usually a 2-page PDF with minimal English. To get a better datasheet: hw416b pir sensor datasheet better

The (often interchangeably referred to as the HC-SR501 ) is a versatile passive infrared (PIR) motion sensor widely used in DIY electronics and security systems. It detects motion by measuring changes in infrared radiation emitted by objects like humans or animals. Key Technical Specifications Specification Operating Voltage DC 4.5V to 20V (5V recommended) Static Current Output Signal Digital (High 3.3V / Low 0V) Detection Range 3 to 7 meters (Adjustable) Detection Angle < 100° to 120° cone angle Delay Time 5 seconds to 300 seconds (Adjustable) Operating Temp -15°C to +70°C PIR Motion Sensor HW416B - Tayda Electronics Unlike the HC-SR501, many HW-416B modules do not

Because the HW-416B can give false triggers on power-up, use this code instead of the basic "Blink" sketch: The official HW416B datasheet (if you can find

The HW416B is a popular passive infrared (PIR) motion sensor module, often compared to the HC-SR501. However, finding a can be frustrating. Many available documents miss critical details like retriggering timing, lens specifications, or voltage ripple sensitivity.