#include <Wire.h>

#define SLAVE_ADDR 0x08

void setup() {
  Wire.begin(); // Master
  Serial.begin(9600);
}

void loop() {
  Wire.requestFrom(SLAVE_ADDR, 10); // Request up to 10 bytes

  String response = "";
  while (Wire.available()) {
    char c = Wire.read();
    response += c;
  }

  Serial.print("Slave response: ");
  Serial.println(response);

  if (response == "WATER") {
    // React to water alert
    Serial.println("⚠️ WATER DETECTED BY SLAVE!");
  }

  delay(1000); // Poll rate
}