diff --git a/src/buzzer.rs b/src/buzzer.rs
index 9ae9f88..edd7e9d 100644
--- a/src/buzzer.rs
+++ b/src/buzzer.rs
@@ -1,8 +1,9 @@
 use rppal::gpio::Gpio;
-use std::{thread, time};
+use tokio::time::sleep;
+use std::time;
 
 /// Emits a sound on a passive buzzer.
-pub fn modulated_tone(pin_num: u8, carrier_hz: u32, sound_hz: u32, duration_ms: u64) {
+pub async fn modulated_tone(pin_num: u8, carrier_hz: u32, sound_hz: u32, duration_ms: u64) {
     let gpio = Gpio::new().expect("GPIO konnte nicht initialisiert werden");
     let mut pin = gpio
         .get(pin_num)
@@ -19,31 +20,31 @@ pub fn modulated_tone(pin_num: u8, carrier_hz: u32, sound_hz: u32, duration_ms:
         let cycles_on = (carrier_hz as f64 * (mod_period / 2.0) / 1000.0) as u64;
         for _ in 0..cycles_on {
             pin.set_high();
-            thread::sleep(carrier_period);
+            sleep(carrier_period).await;
             pin.set_low();
-            thread::sleep(carrier_period);
+            sleep(carrier_period).await;
         }
 
         // Modulation off: Carrier on for mod_period / 2
         let pause = time::Duration::from_millis((mod_period / 2.0) as u64);
-        thread::sleep(pause);
+        sleep(pause).await;
     }
 }
 
-pub fn beep_ack() {
+pub async fn beep_ack() {
     // GPIO 17, carrier  = 2300 Hz, sound = 440 Hz, Dauer = 1 sec
-    modulated_tone(4, 2300, 500, 500);
-    modulated_tone(4, 2300, 700, 500);
+    modulated_tone(4, 2300, 500, 500).await;
+    modulated_tone(4, 2300, 700, 500).await;
 }
 
-pub fn beep_nak() {
+pub async fn beep_nak() {
     // GPIO 17, carrier  = 2300 Hz, sound = 440 Hz, duration = 1 sec
-    modulated_tone(4, 2300, 700, 500);
-    modulated_tone(4, 2300, 500, 500);
+    modulated_tone(4, 2300, 700, 500).await;
+    modulated_tone(4, 2300, 500, 500).await;
 }
 
-pub fn beep_unnkown() {
-    modulated_tone(4, 2300, 500, 500);
-    modulated_tone(4, 2300, 500, 500);
-    modulated_tone(4, 2300, 500, 500);
+pub async fn beep_unnkown() {
+    modulated_tone(4, 2300, 500, 500).await;
+    modulated_tone(4, 2300, 500, 500).await;
+    modulated_tone(4, 2300, 500, 500).await;
 }
diff --git a/src/main.rs b/src/main.rs
index 595c32c..640d05e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -79,8 +79,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                 .add_id(id_store::TallyID(tally_id_string))
             {
                 info!("Added new id to current day");
-                // TODO: trigger the buzzer
-                buzzer::beep_ack();
+                buzzer::beep_ack().await;
                 // led.set_named_color_time(NamedColor::Green, 1); //led is green for 1 sec
 
                 if let Err(e) = channel_store.lock().await.export_json(STORE_PATH).await {