Hw-416-b Pir Sensor Datasheet !exclusive! Page

While it may look like a simple circuit board with a white dome, the HW-416-B is actually a sophisticated thermal radar. Let’s dive into the datasheet secrets that make this tiny sensor a powerhouse for home automation and security.

const int motionPin = 2; const int ledPin = 13; int motionState = 0;

💡 PIR sensors require a "warm-up" period of about 30 to 60 seconds after powering on to calibrate to the environment's infrared signature. During this time, you may get false triggers.

For the HW-416-B, the typical placement is: Jumper on left pair = Single mode; Jumper on right pair = Repeatable mode. However, always check PCB marking.

⚠️ 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.