Sinric Pro Motion Sensor. Tutorial: https://help.sinric.pro/pages/tutorials/motion-sensors/HC-SR501-HC-SR505-AM312-HC-SR312.html

motion-sensor.ino

#if defined(ESP8266)
  #define SENSOR_PIN        D1
#elif defined(ESP32) 
  #define SENSOR_PIN        26
#elif (ARDUINO_ARCH_RP2040)
  #define SENSOR_PIN        5
#endif

int newState;
int oldState;

void setup() {
  Serial.begin(9600);
  pinMode(SENSOR_PIN, INPUT);
  
  Serial.printf("Wait 10 secs for the PIR sensor to calibrate properly\r\n");
  delay(1000 * 10);
  oldState = digitalRead(SENSOR_PIN); // read the starting state
}

void loop() {
  newState = digitalRead(SENSOR_PIN); // read current state

  if(oldState != newState) {
    if (newState == HIGH) {
      Serial.println("Movement detected!");
    } else {
      Serial.println("Movement not detected!");
    }
    oldState = newState;
  }  
   delay(100);
}