diff --git a/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino b/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
index 8d7ceca..05006b6 100644
--- a/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
+++ b/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
@@ -12,7 +12,7 @@ int idDHT11pin = 2; //Digital pin for comunications
 int idDHT11intNumber = 0; //interrupt number (must be the one that use the previus defined pin (see table above)
 
 //declaration
-void dht11_wrapper();
+void dht11_wrapper(); // must be declared before the lib initialization
 
 // Lib instantiate
 idDHT11 DHT11(idDHT11pin,idDHT11intNumber,dht11_wrapper);
@@ -25,6 +25,8 @@ void setup()
   Serial.println(IDDHT11LIB_VERSION);
   Serial.println("---------------");
 }
+// This wrapper is in charge of calling 
+// mus be defined like this for the lib work
 void dht11_wrapper() {
   DHT11.isrCallback();
 }
@@ -45,8 +47,14 @@ void loop()
   case IDDHTLIB_ERROR_CHECKSUM: 
     Serial.println("Error\n\r\tChecksum error"); 
     break;
-  case IDDHTLIB_ERROR_TIMEOUT: 
-    Serial.println("Error\n\r\tTime out error"); 
+  case IDDHTLIB_ERROR_ISR_TIMEOUT: 
+    Serial.println("Error\n\r\tISR Time out error"); 
+    break;
+  case IDDHTLIB_ERROR_RESPONSE_TIMEOUT: 
+    Serial.println("Error\n\r\tResponse time out error"); 
+    break;
+  case IDDHTLIB_ERROR_DATA_TIMEOUT: 
+    Serial.println("Error\n\r\tData time out error"); 
     break;
   case IDDHTLIB_ERROR_ACQUIRING: 
     Serial.println("Error\n\r\tAcquiring"); 
diff --git a/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino b/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
index fe3b65b..28c3ef6 100644
--- a/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
+++ b/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
@@ -14,7 +14,7 @@ int idDHT11pin = 2; //Digital pin for comunications
 int idDHT11intNumber = 0; //interrupt number (must be the one that use the previus defined pin (see table above)
 
 //declaration
-void dht11_wrapper();
+void dht11_wrapper(); // must be declared before the lib initialization
 
 // Lib instantiate
 idDHT11 DHT11(idDHT11pin,idDHT11intNumber,dht11_wrapper);
@@ -27,6 +27,8 @@ void setup()
   Serial.println(IDDHT11LIB_VERSION);
   Serial.println("---------------");
 }
+// This wrapper is in charge of calling 
+// mus be defined like this for the lib work
 void dht11_wrapper() {
   DHT11.isrCallback();
 }
@@ -45,8 +47,14 @@ void loop()
   case IDDHTLIB_ERROR_CHECKSUM: 
     Serial.println("Error\n\r\tChecksum error"); 
     break;
-  case IDDHTLIB_ERROR_TIMEOUT: 
-    Serial.println("Error\n\r\tTime out error"); 
+  case IDDHTLIB_ERROR_ISR_TIMEOUT: 
+    Serial.println("Error\n\r\tISR time out error"); 
+    break;
+  case IDDHTLIB_ERROR_RESPONSE_TIMEOUT: 
+    Serial.println("Error\n\r\tResponse time out error"); 
+    break;
+  case IDDHTLIB_ERROR_DATA_TIMEOUT: 
+    Serial.println("Error\n\r\tData time out error"); 
     break;
   case IDDHTLIB_ERROR_ACQUIRING: 
     Serial.println("Error\n\r\tAcquiring"); 
diff --git a/idDHT11.cpp b/idDHT11.cpp
index a758643..c24bee7 100644
--- a/idDHT11.cpp
+++ b/idDHT11.cpp
@@ -67,7 +67,7 @@ void idDHT11::isrCallback() {
 	int delta = (newUs-us);
 	us = newUs;
 	if (delta>6000) {
-		status = IDDHTLIB_ERROR_TIMEOUT;
+		status = IDDHTLIB_ERROR_ISR_TIMEOUT;
 		state = STOPPED;
 		detachInterrupt(intNumber);
 		return;
@@ -81,7 +81,7 @@ void idDHT11::isrCallback() {
 				state = DATA;
 			} else {
 				detachInterrupt(intNumber);
-				status = IDDHTLIB_ERROR_TIMEOUT;
+				status = IDDHTLIB_ERROR_RESPONSE_TIMEOUT;
 				state = STOPPED;
 			}
 			break;
@@ -90,7 +90,7 @@ void idDHT11::isrCallback() {
 				detachInterrupt(intNumber);
 				status = IDDHTLIB_ERROR_DELTA;
 				state = STOPPED;
-			} else if(60<delta && delta<135) { //valid in timing
+			} else if(60<delta && delta<155) { //valid in timing
 				if(delta>90) //is a one
 					bits[idx] |= (1 << cnt);
 				if (cnt == 0) {  // whe have fullfilled the byte, go to next
@@ -114,7 +114,7 @@ void idDHT11::isrCallback() {
 				} else cnt--;
 			} else {
 				detachInterrupt(intNumber);
-				status = IDDHTLIB_ERROR_TIMEOUT;
+				status = IDDHTLIB_ERROR_DATA_TIMEOUT;
 				state = STOPPED;
 			}
 			break;
diff --git a/idDHT11.h b/idDHT11.h
index 384cc44..ea39613 100644
--- a/idDHT11.h
+++ b/idDHT11.h
@@ -21,17 +21,19 @@
 #define IDDHT11LIB_VERSION "0.1"
 
 // state codes
-#define IDDHTLIB_OK				0
+#define IDDHTLIB_OK			0
 #define IDDHTLIB_ACQUIRING		1
 #define IDDHTLIB_ACQUIRED		2
-#define IDDHTLIB_RESPONSE_OK	3
+#define IDDHTLIB_RESPONSE_OK		3
 
 // error codes
 #define IDDHTLIB_ERROR_CHECKSUM		-1
-#define IDDHTLIB_ERROR_TIMEOUT		-2
-#define IDDHTLIB_ERROR_ACQUIRING	-3
-#define IDDHTLIB_ERROR_DELTA		-4
-#define IDDHTLIB_ERROR_NOTSTARTED	-5
+#define IDDHTLIB_ERROR_ISR_TIMEOUT	-2
+#define IDDHTLIB_ERROR_RESPONSE_TIMEOUT	-3
+#define IDDHTLIB_ERROR_DATA_TIMEOUT	-4
+#define IDDHTLIB_ERROR_ACQUIRING	-5
+#define IDDHTLIB_ERROR_DELTA		-6
+#define IDDHTLIB_ERROR_NOTSTARTED	-7
 
 #define IDDHT11_CHECK_STATE		if(state == STOPPED)													\
 									return status;													\
@@ -71,4 +73,4 @@ private:
 	volatile float hum;
 	volatile float temp;
 };
-#endif // idDHT11_H__
\ No newline at end of file
+#endif // idDHT11_H__