The PCB includes dedicated ports for adding a photoresistor (for day/night light control) and a thermistor (for temperature compensation), which are rarely found on basic modules. Pinout and Connection Guide
Single Trigger: The output goes low immediately after the delay time expires. hw416b pir sensor datasheet better
#define PIR_PIN GPIO_NUM_4
: Ground reference. Must be shared with your microcontroller's ground. Onboard Adjustments The PCB includes dedicated ports for adding a
This determines how long the "High" signal lasts after the last detected movement. Integration Tips for Better Stability covering the essential specifications
The datasheet provided is relatively comprehensive, covering the essential specifications, features, and application information for the HW416B PIR sensor. Here's a breakdown of the key points: