diff --git a/alertled.cpp b/alertled.cpp
index 930aebc..c7cf904 100644
--- a/alertled.cpp
+++ b/alertled.cpp
@@ -26,8 +26,8 @@ void AlertLED::init(EventManager* eventManager) {
     pinMode(CFG_LED_ALERT1, OUTPUT);
     pinMode(CFG_LED_ALERT2, OUTPUT);
     pinMode(CFG_BEEPER, OUTPUT);
-    digitalWrite(CFG_LED_ALERT1, 1);
-    digitalWrite(CFG_LED_ALERT2, 1);
+    digitalWrite(CFG_LED_ALERT1, 1 - INVERTED);
+    digitalWrite(CFG_LED_ALERT2, 1 - INVERTED);
     digitalWrite(CFG_BEEPER, 1);
     
     alertStatus = ALERT_NONE;
diff --git a/alertled.h b/alertled.h
index 3448752..5d3bddc 100644
--- a/alertled.h
+++ b/alertled.h
@@ -39,8 +39,8 @@ class AlertLED {
             if (alertStatus == ALERT_NONE) {
                 if (!animPtr) return;
                 animPtr = 0;
-                analogWrite(CFG_LED_ALERT1, 1023);
-                analogWrite(CFG_LED_ALERT2, 1023);
+                analogWrite(CFG_LED_ALERT1, INVERTED ? 0 : 1023);
+                analogWrite(CFG_LED_ALERT2, INVERTED ? 0 : 1023);
                 analogWrite(CFG_BEEPER, 1023);
                 return;
             }
@@ -48,8 +48,13 @@ class AlertLED {
             if (animPtr >= sizeof(anim_warning[alertStatus])/sizeof(ALED_CFG)) animPtr = 0;
 
             memcpy_P(&anim, &anim_warning[alertStatus][animPtr], sizeof(ALED_CFG));
-            analogWrite(CFG_LED_ALERT1, (anim.lft - 1023) * mult + 1023);
-            analogWrite(CFG_LED_ALERT2, (anim.rgt - 1023) * mult + 1023);
+            if (INVERTED) {
+                analogWrite(CFG_LED_ALERT1, (1024 -anim.lft) * mult);
+                analogWrite(CFG_LED_ALERT2, (1024 - anim.rgt) * mult);
+            } else {
+                analogWrite(CFG_LED_ALERT1, (anim.lft - 1023) * mult + 1023);
+                analogWrite(CFG_LED_ALERT2, (anim.rgt - 1023) * mult + 1023);
+            }
             analogWrite(CFG_BEEPER, anim.beeper);
             
             animPtr++;
diff --git a/config.h b/config.h
index 88beeee..9750963 100644
--- a/config.h
+++ b/config.h
@@ -8,6 +8,8 @@
 // Software version
 #define FW_VERSION "1.4"
 
+#define INVERTED 1
+
 // Enable / disabled modules
 #define ENABLE_STATUSLED 1
 #define ENABLE_ALERTLED 1
diff --git a/statusled.cpp b/statusled.cpp
index a3203e5..f3896d7 100644
--- a/statusled.cpp
+++ b/statusled.cpp
@@ -37,13 +37,19 @@ void StatusLED::setStatus(byte state) {
 void StatusLED::tick() {
     if (!gpsStatus) {
         // Display sweep animation whene there is no reception
-        analogWrite(CFG_LED_STATUS, animPulse[pos]);
+        analogWrite(CFG_LED_STATUS, INVERTED ? 1023 - animPulse[pos] : animPulse[pos]);
         pos++;
         if (pos >= sizeof(animPulse) / 2) pos = 0;
     } else {
         // Short pings when reception acquired
-        if (pos == 0) analogWrite(CFG_LED_STATUS, GPS::isNight() ? 900 : 1);
-        else analogWrite(CFG_LED_STATUS, 1023);
+        if (pos == 0) {
+            if (GPS::isNight()) {
+                analogWrite(CFG_LED_STATUS, INVERTED ? 123 : 900);
+            } else {
+                analogWrite(CFG_LED_STATUS, INVERTED ? 1023 : 1);
+            }
+        }
+        else analogWrite(CFG_LED_STATUS, INVERTED ? 0 : 1023);
         if (++pos >= 150) pos = 0;
     }
 }