The following code configures the Arduino to monitor the HW-416-B and trigger the built-in LED (Pin 13) when motion occurs.
3 to 7 meters (Adjustable via onboard potentiometer)
This article provides a deep dive into the HW-416-B PIR sensor datasheet, including technical specifications, pinout configurations, sensitivity adjustments, and integration with microcontrollers like Arduino. 1. What is the HW-416-B PIR Sensor?
If you hold the module with the Fresnel lens facing away from you and the pins pointing downward, the pinout from left to right is generally structured as follows: hw-416-b pir sensor datasheet
Disclaimer: Specifications are typical for modules sold under the HW-416-B label. Always test your specific module before finalizing a design.
Digital TTL High (3.3V) when motion is detected; Low (0V) otherwise. Detection Range: 3 to 7 meters (adjustable via potentiometer). Detection Angle: Approximately 110° to 120°. Delay Time: 0.3 seconds to 5 minutes (adjustable via potentiometer). Operating Temperature: -20°C to +80°C. Pinout Configuration How PIR Sensor Works and How To Use It with Arduino
The module consists of a , a Fresnel lens , and an analog processor . The Fresnel Lens The following code configures the Arduino to monitor
⚠️ The HW-416-B uses two potentiometers. On some boards, the left is SENS and right is TIME . Verify with your specific board silkscreen or by testing.
< 60 µA (Ideal for battery-powered applications) Digital Output Level: High (3.3V) / Low (0V)
+-------------------------+ | | | FRESNEL LENS | | (Front Side) | | | +-------------------------+ | | | VCC OUT GND Pin Description +-------------------------+ | | | FRESNEL LENS | |
The sensor needs about 30 to 60 seconds to "learn" the infrared signature of the room after powering on. Expect false triggers during this time.
Activating lights, screens, or animatronics when a visitor walks near an exhibition gallery.
3 meters to 7 meters (Adjustable via onboard potentiometer)