diff --git a/src/Buzzer.cpp b/src/Buzzer.cpp
index 525e1969..5bedeb0f 100644
--- a/src/Buzzer.cpp
+++ b/src/Buzzer.cpp
@@ -2,6 +2,15 @@
 
 void Buzzer::Ring()
 {
+#ifdef PASSIVE_BUZZER
+    tone(BUZZER_BUS, 1000);
+    delay(500);
+    noTone(BUZZER_BUS);
+    delay(500);
+    tone(BUZZER_BUS, 1000);
+    delay(500);
+    noTone(BUZZER_BUS);
+#else
     digitalWrite(BUZZER_BUS, HIGH);
     delay(500);
     digitalWrite(BUZZER_BUS, LOW);
@@ -9,6 +18,7 @@ void Buzzer::Ring()
     digitalWrite(BUZZER_BUS, HIGH);
     delay(500);
     digitalWrite(BUZZER_BUS, LOW);
+#endif  // PASSIVE_BUZZER
 }
 
 void Buzzer::Ring(int count)
@@ -20,9 +30,16 @@ void Buzzer::Ring(int count, int duration)
 {
     for (byte i = 0; i < count; i++)
     {
+#ifdef PASSIVE_BUZZER
+        tone(BUZZER_BUS, 1000);
+        delay(duration);
+        noTone(BUZZER_BUS);
+        delay(500);
+#else
         digitalWrite(BUZZER_BUS, HIGH);
         delay(duration);
         digitalWrite(BUZZER_BUS, LOW);
         delay(500);
+#endif  // PASSIVE_BUZZER
     }
 }
\ No newline at end of file