diff --git a/libguh/devicemanager.cpp b/libguh/devicemanager.cpp
index 613f5668..95e7154e 100644
--- a/libguh/devicemanager.cpp
+++ b/libguh/devicemanager.cpp
@@ -43,8 +43,10 @@
     \value HardwareResourceTimer
         Refers to the global timer managed by the \l{DeviceManager}. Plugins should not create their own timers,
         but rather request the global timer using the hardware resources.
+    \value HardwareResourceNetworkManager
+        Allows to send network requests and receive replies.
     \value HardwareResourceUpnpDisovery
-        Allowes plugins to search a UPnP devices in the network.
+        Allowes to search a UPnP devices in the network.
 */
 
 /*! \enum DeviceManager::DeviceError
diff --git a/libguh/network/networkmanager.cpp b/libguh/network/networkmanager.cpp
index b8b4258b..237aa2ee 100644
--- a/libguh/network/networkmanager.cpp
+++ b/libguh/network/networkmanager.cpp
@@ -16,16 +16,45 @@
  *                                                                         *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
+/*!
+  \class NetworkManager
+  \brief Allows to send network requests and receive replies.
+
+  \ingroup hardware
+  \inmodule libguh
+
+  The network manager class is a reimplementation of the \l{http://doc-snapshot.qt-project.org/qt5-5.4/qnetworkaccessmanager.html}{QNetworkAccessManager}
+  and allows plugins to send network requests and receive replies.
+*/
+
+/*!
+ * \fn NetworkManager::replyReady(const PluginId &pluginId, QNetworkReply *reply)
+ * This signal will be emitted whenever a pending network \a reply for the plugin with the given \a pluginId is finished.
+ *
+ * \sa DevicePlugin::networkManagerReplyReady()
+ */
+
 #include "networkmanager.h"
 
+/*! Construct the hardware resource NetworkManager with the given \a parent. */
 NetworkManager::NetworkManager(QObject *parent) :
     QObject(parent)
 {
     m_manager = new QNetworkAccessManager(this);
-
     connect(m_manager, &QNetworkAccessManager::finished, this, &NetworkManager::replyFinished);
+
+    qDebug() << "--> Network manager created successfully.";
 }
 
+/*! Posts a request to obtain the contents of the target \a request from the plugin with the given \a pluginId
+ * and returns a new QNetworkReply object opened for reading which emits the replyReady() signal whenever new
+ * data arrives.
+ * The contents as well as associated headers will be downloaded.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa DevicePlugin::networkManagerGet()
+ */
 QNetworkReply *NetworkManager::get(const PluginId &pluginId, const QNetworkRequest &request)
 {
     QNetworkReply  *reply = m_manager->get(request);
@@ -33,6 +62,14 @@ QNetworkReply *NetworkManager::get(const PluginId &pluginId, const QNetworkReque
     return reply;
 }
 
+/*! Sends an HTTP POST request to the destination specified by \a request from the plugin with the given
+ * \a pluginId and returns a new QNetworkReply object opened for reading that will contain the reply sent
+ * by the server. The contents of the \a data will be uploaded to the server.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa DevicePlugin::networkManagerPost()
+ */
 QNetworkReply *NetworkManager::post(const PluginId &pluginId, const QNetworkRequest &request, const QByteArray &data)
 {
     QNetworkReply  *reply = m_manager->post(request, data);
@@ -40,6 +77,13 @@ QNetworkReply *NetworkManager::post(const PluginId &pluginId, const QNetworkRequ
     return reply;
 }
 
+/*! Uploads the contents of \a data to the destination \a request from the plugin with the given
+ * \a pluginId and returnes a new QNetworkReply object that will be open for reply.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa DevicePlugin::networkManagerPut()
+ */
 QNetworkReply *NetworkManager::put(const PluginId &pluginId, const QNetworkRequest &request, const QByteArray &data)
 {
     QNetworkReply  *reply = m_manager->put(request, data);
diff --git a/libguh/plugin/deviceplugin.cpp b/libguh/plugin/deviceplugin.cpp
index 229d3a9d..24b024df 100644
--- a/libguh/plugin/deviceplugin.cpp
+++ b/libguh/plugin/deviceplugin.cpp
@@ -60,6 +60,12 @@
  \sa UpnpDiscovery
  */
 
+/*!
+ \fn DevicePlugin::networkManagerReplyReady(QNetworkReply *reply)
+ This method will be called whenever a pending network \a reply for this plugin is finished.
+ \sa NetworkManager::replyReady()
+ */
+
 /*!
  \fn void DevicePlugin::executeAction(Device *device, const Action &action)
  This will be called to actually execute actions on the hardware. The \{Device} and
@@ -518,7 +524,14 @@ bool DevicePlugin::transmitData(int delay, QList<int> rawData, int repetitions)
     }
     return false;
 }
-
+/*! Posts a request to obtain the contents of the target \a request and returns a new QNetworkReply object
+ * opened for reading which emits the replyReady() signal whenever new data arrives.
+ * The contents as well as associated headers will be downloaded.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa NetworkManager::get()
+ */
 QNetworkReply *DevicePlugin::networkManagerGet(const QNetworkRequest &request)
 {
     if (requiredHardware().testFlag(DeviceManager::HardwareResourceNetworkManager)) {
@@ -528,7 +541,14 @@ QNetworkReply *DevicePlugin::networkManagerGet(const QNetworkRequest &request)
     }
     return nullptr;
 }
-
+/*! Sends an HTTP POST request to the destination specified by \a request and returns a new QNetworkReply object
+ * opened for reading that will contain the reply sent by the server. The contents of the \a data will be
+ * uploaded to the server.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa NetworkManager::post()
+ */
 QNetworkReply *DevicePlugin::networkManagerPost(const QNetworkRequest &request, const QByteArray &data)
 {
     if (requiredHardware().testFlag(DeviceManager::HardwareResourceNetworkManager)) {
@@ -539,6 +559,12 @@ QNetworkReply *DevicePlugin::networkManagerPost(const QNetworkRequest &request,
     return nullptr;
 }
 
+/*! Uploads the contents of \a data to the destination \a request and returnes a new QNetworkReply object that will be open for reply.
+ *
+ * \note The plugin has to delete the QNetworkReply with the function deleteLater().
+ *
+ * \sa NetworkManager::put()
+ */
 QNetworkReply *DevicePlugin::networkManagerPut(const QNetworkRequest &request, const QByteArray &data)
 {
     if (requiredHardware().testFlag(DeviceManager::HardwareResourceNetworkManager)) {