diff --git a/SensorsArd/SensorsArd.ino b/SensorsArd/SensorsArd.ino
index 256cf3f..ff703bd 100644
--- a/SensorsArd/SensorsArd.ino
+++ b/SensorsArd/SensorsArd.ino
@@ -3,24 +3,28 @@ const int trigPin = 9;
 const int echoPin = 10;
 const int ProxSensor = 2;
 const int relayPin = 12;
+const int buzzerPin = 3;
 int inputVal = 0;
 long duration;
 int distance;
 char piInput = 'N';
 
 void setup() {
-  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
-  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
+  pinMode(trigPin, OUTPUT);
+  pinMode(echoPin, INPUT); 
   pinMode(LED_BUILTIN, OUTPUT);
   pinMode(relayPin, OUTPUT);
+  pinMode(buzzerPin, OUTPUT);
+  pinMode(ProxSensor,INPUT);
+  digitalWrite(buzzerPin, LOW);
   digitalWrite(relayPin, LOW);
-  Serial.begin(9600); // Starts the serial communication
-  pinMode(ProxSensor,INPUT);    //Pin 2 is connected to the output of proximity sensor
+  Serial.begin(9600); 
 
 }
 
 void loop() {
 
+
   boolean IROK = false;
   boolean UltraOK = false;
   // Clears the trigPin
@@ -45,6 +49,7 @@ void loop() {
   if (IROK && UltraOK && Serial.available() > 0 ){
     if (Serial.read() == 'O') {
       digitalWrite(relayPin, HIGH);
+      playBuzzer(2,false);
       delay(5000);
       digitalWrite(relayPin, LOW);
       IROK = false;
@@ -64,7 +69,26 @@ void serialFlush(){
   while(Serial.available() > 0) {
     char t = Serial.read();
   }
-}   
+}
+
+void playBuzzer(int time, boolean ok){
+  if (ok) {
+    tone(buzzerPin, 1000);
+    delay(time/3);
+    noTone(buzzerPin);
+    delay(time/5);
+    tone(buzzerPin,1000);
+    delay(time/3);
+    noTone(buzzerPin);
+  } 
+  else {
+    tone(buzzerPin, 1000);
+    delay(time);
+    noTone(buzzerPin);
+    
+  }
+}
+
 
 
 
diff --git a/main.py b/main.py
index 414260b..5bb9acd 100644
--- a/main.py
+++ b/main.py
@@ -83,13 +83,13 @@ def start( camera, face_cascade):
 			#print('Closing')
 			#break
 
-
 def recognize(image):
 	names = loadNames()
 	face_recognizer = cv2.createLBPHFaceRecognizer()
 	face_recognizer.load('faces/m')
 	img = image.copy()
 	label= face_recognizer.predict(img)
+	print(label)
 	if label[1] > 120:
 		return 'unknown'
 	else:
@@ -97,7 +97,7 @@ def recognize(image):
 		
 def OpenShifter():
 	try:
-		ser = serial.Serial('/dev/ttyUSB1',9600)
+		ser = serial.Serial('/dev/ttyUSB0',9600)
 		#ser.open()
 		ser.write('O')
 		ser.close()