diff --git a/ampel-firmware/co2_sensor.cpp b/ampel-firmware/co2_sensor.cpp
index 7110776f7ab9362e431917afa8ebc84cd8bcb653..70eff6987302aa03f7bd3105e8884cf27c70a3ea 100644
--- a/ampel-firmware/co2_sensor.cpp
+++ b/ampel-firmware/co2_sensor.cpp
@@ -13,6 +13,7 @@ namespace config {
   const float temperature_offset = -3.0;  // [K] Temperature measured by sensor is usually at least 3K too high.
 #endif
   const bool auto_calibrate_sensor = AUTO_CALIBRATE_SENSOR; // [true / false]
+  const bool led_breathing = LED_BREATHING;
 }
 
 namespace sensor {
@@ -137,7 +138,9 @@ namespace sensor {
      */
     if (co2 < 2000) {
       led_effects::displayCO2color(co2);
-      led_effects::breathe(co2);
+      if (config::led_breathing) {
+        led_effects::breathe(co2);
+      }
     } else {
       // >= 2000: entire ring blinks red
       led_effects::redAlert();
diff --git a/ampel-firmware/config.public.h b/ampel-firmware/config.public.h
index 00339350cf751165bbd1c1ac46f78ef859e46ed5..f89cbae72b916ed8f1ae4b7fa4dcd82039c981e2 100644
--- a/ampel-firmware/config.public.h
+++ b/ampel-firmware/config.public.h
@@ -64,6 +64,12 @@
 #  define MAX_BRIGHTNESS 255
 #  define MIN_BRIGHTNESS 60
 
+// Should the LED display show a breathing effect during measurement?
+#  define LED_BREATHING true // [true / false]
+// Accelerate breathing above this CO2 concentration.
+#  define LED_BREATHING_ACCEL_THRESHOLD 1600 // [ppm]
+
+
 /**
  * WEB SERVER
  * available at http://local_ip, with user HTTP_USER and password HTTP_PASSWORD
diff --git a/ampel-firmware/led_effects.cpp b/ampel-firmware/led_effects.cpp
index f654e77e581ec88bfce7c3dd8be9b648740e9583..3629be8f4c982ca29e9fe66159f5441dd6a71159 100644
--- a/ampel-firmware/led_effects.cpp
+++ b/ampel-firmware/led_effects.cpp
@@ -5,6 +5,7 @@
 namespace config {
   const uint8_t max_brightness = MAX_BRIGHTNESS;
   const uint8_t min_brightness = MIN_BRIGHTNESS;
+  const uint16_t led_breathing_accel_threshold = LED_BREATHING_ACCEL_THRESHOLD;
   const int kitt_tail = 3; // How many dimmer LEDs follow in K.I.T.T. wheel
 }
 
@@ -180,15 +181,16 @@ namespace led_effects {
   }
 
   void breathe(int16_t co2) {
-    if (!config::night_mode) {
-      static uint16_t breathing_offset = 0;
-      uint16_t brightness = config::min_brightness
-          + pixels.sine8(breathing_offset) * config::brightness_amplitude / 255;
-      pixels.setBrightness(brightness);
-      pixels.show();
-      breathing_offset += 3; // breathing speed. +3 looks like slow human breathing.
+    if (config::night_mode) {
+      return;
     }
-    delay(co2 > 1600 ? 50 : 100); // faster breathing for higher CO2 values
+    static uint16_t breathing_offset = 0;
+    uint16_t brightness = config::min_brightness
+        + pixels.sine8(breathing_offset) * config::brightness_amplitude / 255;
+    pixels.setBrightness(brightness);
+    pixels.show();
+    breathing_offset += 3; // breathing speed. +3 looks like slow human breathing.
+    delay(co2 > config::led_breathing_accel_threshold ? 50 : 100); // faster breathing for higher CO2 values
   }
 
   /**