diff --git a/src/prog/domod/src/devices/light-device.cpp b/src/prog/domod/src/devices/light-device.cpp
index eadc6d1c..e64addc8 100644
--- a/src/prog/domod/src/devices/light-device.cpp
+++ b/src/prog/domod/src/devices/light-device.cpp
@@ -51,13 +51,12 @@ LightDevice::~LightDevice(void)
 {
 }
 
-
 /*!  ----------------------------------------------------------------------------
  *  @fn operator[]
  *
- *  @brief to access to a specific light opbject.
+ *  @brief to access to a specific light object.
  */
-Light& LightDevice::operator[] (int a_pos)
+Light& LightDevice::operator[](int a_pos)
 {
 	return m_lights[a_pos];
 }
diff --git a/src/prog/domod/src/devices/light-device.h b/src/prog/domod/src/devices/light-device.h
index 2f217dee..1c43f0cd 100644
--- a/src/prog/domod/src/devices/light-device.h
+++ b/src/prog/domod/src/devices/light-device.h
@@ -41,7 +41,7 @@ class LightDevice : public Device
 	LightDevice(void);
 	~LightDevice(void);
 
-	Light& operator[] (int a_pos);
+	Light& operator[](int a_pos);
 
 	uint16_t size(void);
 
diff --git a/src/prog/domod/src/devices/shutter-device.cpp b/src/prog/domod/src/devices/shutter-device.cpp
index 1bdb3a51..6fa836ff 100644
--- a/src/prog/domod/src/devices/shutter-device.cpp
+++ b/src/prog/domod/src/devices/shutter-device.cpp
@@ -51,6 +51,50 @@ ShutterDevice::~ShutterDevice(void)
 {
 }
 
+/*!  ----------------------------------------------------------------------------
+ *  @fn operator[]
+ *
+ *  @brief to access to a specific shutter object.
+ */
+Shutter& ShutterDevice::operator[] (int a_pos)
+{
+	return m_shutters[a_pos];
+}
+
+/*!  ----------------------------------------------------------------------------
+ *  @fn size
+ *
+ *  @brief return the size of the shutter devices.
+ */
+uint16_t ShutterDevice::size(void)
+{
+	return m_shutters.size();
+}
+
+/*!  ----------------------------------------------------------------------------
+ *  @fn size
+ *
+ *  @brief return the size of the light devices.
+ */
+int ShutterDevice::find(int a_pos)
+{
+	std::vector<Shutter>::iterator the_shutter_it;
+	int the_status = -1;
+	int the_pos = 0;
+
+	for (the_shutter_it = m_shutters.begin(); the_shutter_it != m_shutters.end(); the_shutter_it++)
+	{
+		if ((*the_shutter_it).get_id() == a_pos)
+		{
+			return the_pos;
+		}
+
+		the_pos++;
+	}
+
+	return the_status;
+}
+
 /*!  ----------------------------------------------------------------------------
  *  @fn from_json
  *
diff --git a/src/prog/domod/src/devices/shutter-device.h b/src/prog/domod/src/devices/shutter-device.h
index 0dd9f2fb..fbfea3db 100644
--- a/src/prog/domod/src/devices/shutter-device.h
+++ b/src/prog/domod/src/devices/shutter-device.h
@@ -41,6 +41,12 @@ class ShutterDevice : public Device
 	ShutterDevice(void);
 	~ShutterDevice(void);
 
+	Shutter& operator[](int a_pos);
+
+	uint16_t size(void);
+
+	int find(int a_pos);
+
 	int from_json(struct json_object *a_node);
 	struct json_object *to_json(void);
 
diff --git a/src/prog/domod/src/devices/sprinkler-device.h b/src/prog/domod/src/devices/sprinkler-device.h
index 0148b702..52bedc29 100644
--- a/src/prog/domod/src/devices/sprinkler-device.h
+++ b/src/prog/domod/src/devices/sprinkler-device.h
@@ -42,6 +42,12 @@ class SprinklerDevice : public Device
 	SprinklerDevice(void);
 	~SprinklerDevice(void);
 
+	Sprinkler& operator[](int a_pos);
+
+	uint16_t size(void);
+
+	int find(int a_pos);
+
 	int from_json(struct json_object *a_node);
 	struct json_object *to_json(void);