diff --git a/platformio.ini b/platformio.ini
index 0d0476e..eba7aa6 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -13,10 +13,10 @@ platform = espressif32
 board = esp32dev
 framework = arduino
 monitor_speed = 115200
-; upload_port = COM[6]
-upload_protocol = espota
+#; upload_port = COM[6]
+#upload_protocol = espota
 upload_port = 192.168.2.92
-; board_build.partitions = huge_app.csv
+;board_build.partitions = huge_app.csv
 board_build.partitions = min_spiffs.csv
 
 
diff --git a/src/main.cpp b/src/main.cpp
index bf3ad2f..241e257 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -53,20 +53,27 @@ class MyServerCallbacks : public BLEServerCallbacks {
     }
 };
 // uint8_t toggle = 0;
-uint8_t alarmFired = 0;
+uint8_t alarmFired_1km = 0;
+uint8_t alarmFired_500m = 0;
+uint8_t alarmFired_300m = 0;
 int state = 0;
 class MyAlarmCallback : public BLECharacteristicCallbacks {
     void onWrite(BLECharacteristic * pCharacteristic) {
         std::string value = pCharacteristic->getValue();
 
-        for (int i = 0; i < value.length(); i++) {
-            Serial.print(value[i]);
-        }
-        Serial.println("");
-
         if (value.compare("X") == 0) {
             Serial.println("found X");
-            alarmFired = 1;
+            alarmFired_1km = 1;
+            state = 0;
+        }
+        else if (value.compare("XX") == 0) {
+            Serial.println("found XX");
+            alarmFired_500m = 1;
+            state = 0;
+        }
+        else if (value.compare("XXX") == 0) {
+            Serial.println("found XXX");
+            alarmFired_300m = 1;
             state = 0;
         }
         else if (value.compare("U") == 0) {
@@ -120,6 +127,8 @@ void setup() {
     Serial.begin(115200);
 
     EEPROM.begin(EEPROM_SIZE);
+
+    // needs to be uncommend for very first boot
     // EEPROM.write(MODE_ADDRESS, MODE_BLE);
     // EEPROM.commit();
 
@@ -130,7 +139,7 @@ void setup() {
         // upcounting timer 1MHz
         timer = timerBegin(0, 40, true);
         timerAttachInterrupt(timer, &onTimer, true);
-        timerAlarmWrite(timer, 100000, true);
+        timerAlarmWrite(timer, 400000, true);
         timerAlarmEnable(timer);
 
         // blink led
@@ -205,7 +214,20 @@ void setup() {
     // ArduinoOTA.begin();
 }
 
+// toggles pin and returns new state of pin
+uint8_t togglePin(uint8_t pin, uint8_t state) {
+    if (state == 0) {
+        digitalWrite(pin, HIGH);
+        return 1;
+    }
+    else {
+        digitalWrite(pin, LOW);
+        return 0;
+    }
+}
+
 std::string x;
+uint8_t stateLED = 0;
 
 void loop() {
     if (mode == MODE_WIFI) {
@@ -216,7 +238,7 @@ void loop() {
 
         // BLE mode
 
-        // occures every 100ms
+        // occures every 200ms
         if (ctr > 0) {
             portENTER_CRITICAL(&timerMux);
             ctr--;
@@ -230,22 +252,35 @@ void loop() {
             }
             state++;
 #else
-            if (alarmFired) {
-                if (state % 2 == 0) {
-                    digitalWrite(ALARM_LED, HIGH);
+            if (alarmFired_1km) {
+                if (state % 4 == 0) {
+                    stateLED = togglePin(ALARM_LED, stateLED);
                 }
-                else {
-                    digitalWrite(ALARM_LED, LOW);
+                state++;
+            }
+            else if (alarmFired_500m) {
+                if (state % 3 == 0) {
+                    stateLED = togglePin(ALARM_LED, stateLED);
+                }
+                state++;
+            }
+            else if (alarmFired_300m) {
+                if (state % 2 == 0) {
+                    stateLED = togglePin(ALARM_LED, stateLED);
                 }
                 state++;
             }
 #endif
-            if (state == 22) {
+            if (state == 50) {
                 state = 0;
+                digitalWrite(ALARM_LED, LOW);
+                stateLED = 0;
 #if defined TESTMODE
                 ctr = -20;
 #endif
-                alarmFired = 0;
+                alarmFired_1km = 0;
+                alarmFired_500m = 0;
+                alarmFired_300m = 0;
             }
         }
 
@@ -271,6 +306,6 @@ void loop() {
             oldDeviceConnected = deviceConnected;
         }
 
-        delay(500);
+        // delay(500);
     }
 }
\ No newline at end of file