Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

Projects/RelayController/RelayController_1.0/RelayController_1.0.ino

@@ -0,0 +1,66 @@
+#include <Servo.h>
+
+int relayPins[] = {4, 7, 6, 5};
+int buttonPins[] = {8, 9, 10, 11, 12, 13};
+int relayState[] = {0, 0, 0, 0};
+int buttonState = 0;
+
+Servo myservo;
+
+void setup() {
+  for (int i = 0; i < 6; i++)
+  {
+    if (i < 4)
+    {
+      pinMode(relayPins[i], OUTPUT);
+    }
+    pinMode(buttonPins[i], INPUT_PULLUP);
+  }
+
+  myservo.attach(3);
+} 
+
+void loop()  
+{
+  for (int i = 0; i < 6; i++)
+  {
+    buttonState = digitalRead(buttonPins[i]);
+    if (buttonState == LOW)
+    {
+      switch (i)
+      {
+        case 4:
+          //
+          break;
+        case 3:
+          // Turn on the servo for speaker
+          myservo.write(150);
+          delay(1000);
+          myservo.write(140);
+          break;
+        default:
+          relayChange(i);
+          break;
+      }
+    }
+    while (buttonState == LOW)
+    {
+      delay(50);
+      buttonState = digitalRead(buttonPins[i]);
+    }
+  }                   
+}
+
+void relayChange(int i)
+{
+  if (relayState[i] == 0)
+  {
+    digitalWrite(relayPins[i], HIGH);
+    relayState[i] = 1;
+  }
+  else
+  {
+    digitalWrite(relayPins[i], LOW);
+    relayState[i] = 0;
+  }
+}