diff --git a/src/se/hal/deamon/PCDataSynchronizationClient.java b/src/se/hal/deamon/PCDataSynchronizationClient.java
index 93a81455..47b2b309 100755
--- a/src/se/hal/deamon/PCDataSynchronizationClient.java
+++ b/src/se/hal/deamon/PCDataSynchronizationClient.java
@@ -7,6 +7,7 @@ import se.hal.struct.Sensor;
 import se.hal.struct.User;
 import zutil.db.DBConnection;
 import zutil.log.LogUtil;
+import zutil.parser.json.JSONParser;
 
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
@@ -66,7 +67,7 @@ public class PCDataSynchronizationClient implements HalDaemon {
                         sensor.setExternalId(sensorDTO.sensorId);
                         sensor.setName(sensorDTO.name);
                         sensor.setType(sensorDTO.type);
-                        sensor.setConfig(sensorDTO.config);
+                        sensor.getDeviceConfig().setValues(JSONParser.read(sensorDTO.config)).applyConfiguration();
 						sensor.setUser(user);
                         sensor.save(db);
                     }
diff --git a/src/se/hal/deamon/PCDataSynchronizationDaemon.java b/src/se/hal/deamon/PCDataSynchronizationDaemon.java
index 9c6e16bb..94ad74c5 100755
--- a/src/se/hal/deamon/PCDataSynchronizationDaemon.java
+++ b/src/se/hal/deamon/PCDataSynchronizationDaemon.java
@@ -10,6 +10,7 @@ import zutil.db.SQLResultHandler;
 import zutil.log.LogUtil;
 import zutil.net.threaded.ThreadedTCPNetworkServer;
 import zutil.net.threaded.ThreadedTCPNetworkServerThread;
+import zutil.parser.json.JSONWriter;
 
 import java.io.IOException;
 import java.io.ObjectInputStream;
@@ -85,7 +86,7 @@ public class PCDataSynchronizationDaemon extends ThreadedTCPNetworkServer implem
                                 dto.sensorId = sensor.getId();
                                 dto.name = sensor.getName();
                                 dto.type = sensor.getType();
-                                dto.config = sensor.getConfig();
+                                dto.config = JSONWriter.toString(sensor.getDeviceConfig().getValuesAsNode());
                                 rsp.sensors.add(dto);
                             }
                         }
diff --git a/src/se/hal/page/EventConfigHttpPage.java b/src/se/hal/page/EventConfigHttpPage.java
index 6c0cb5b9..302f0e34 100755
--- a/src/se/hal/page/EventConfigHttpPage.java
+++ b/src/se/hal/page/EventConfigHttpPage.java
@@ -2,6 +2,7 @@ package se.hal.page;
 
 import se.hal.ControllerManager;
 import se.hal.HalContext;
+import se.hal.intf.HalEventData;
 import se.hal.intf.HalHttpPage;
 import se.hal.struct.Event;
 import se.hal.struct.User;
@@ -52,22 +53,25 @@ public class EventConfigHttpPage extends HalHttpPage {
         if(request.containsKey("action")){
             int id = (request.containsKey("id") ? Integer.parseInt(request.get("id")) : -1);
             Event event;
+            Configurator<HalEventData> configurator;
             switch(request.get("action")) {
                 // Local events
                 case "create_local_event":
                     event = new Event();
                     event.setName(request.get("name"));
                     event.setType(request.get("type"));
-                    //event.setConfig(request.get("config"));
                     event.setUser(localUser);
+                    configurator = event.getDeviceConfig();
+                    configurator.setValues(request);
+                    configurator.applyConfiguration();
                     event.save(db);
                 case "modify_local_event":
                     event = Event.getEvent(db, id);
                     if(event != null){
                         event.setName(request.get("name"));
                         event.setType(request.get("type"));
-                        //event.setConfig(request.get("config"));
                         event.setUser(localUser);
+                        event.getDeviceConfig().setValues(request).applyConfiguration();
                         event.save(db);
                     }
                     break;
diff --git a/src/se/hal/page/SensorConfigHttpPage.java b/src/se/hal/page/SensorConfigHttpPage.java
index 11937e99..de564c84 100755
--- a/src/se/hal/page/SensorConfigHttpPage.java
+++ b/src/se/hal/page/SensorConfigHttpPage.java
@@ -3,6 +3,7 @@ package se.hal.page;
 import se.hal.ControllerManager;
 import se.hal.HalContext;
 import se.hal.intf.HalHttpPage;
+import se.hal.intf.HalSensorData;
 import se.hal.struct.Sensor;
 import se.hal.struct.User;
 import zutil.db.DBConnection;
@@ -53,6 +54,7 @@ public class SensorConfigHttpPage extends HalHttpPage {
             int id = (request.containsKey("id") ? Integer.parseInt(request.get("id")) : -1);
             Sensor sensor;
             User user;
+            Configurator<HalSensorData> configurator;
             switch(request.get("action")) {
                 // Local Sensors
                 case "create_local_sensor":
@@ -60,8 +62,10 @@ public class SensorConfigHttpPage extends HalHttpPage {
                     sensor.setName(request.get("name"));
                     sensor.setType(request.get("type"));
                     sensor.setSynced(Boolean.parseBoolean(request.get("sync")));
-                    //sensor.setConfig(request.get("config"));
                     sensor.setUser(localUser);
+                    configurator = sensor.getDeviceConfig();
+                    configurator.setValues(request);
+                    configurator.applyConfiguration();
                     sensor.save(db);
                 case "modify_local_sensor":
                     sensor = Sensor.getSensor(db, id);
@@ -69,7 +73,7 @@ public class SensorConfigHttpPage extends HalHttpPage {
                         sensor.setName(request.get("name"));
                         sensor.setType(request.get("type"));
                         sensor.setSynced(Boolean.parseBoolean(request.get("sync")));
-                        //sensor.setConfig(request.get("config"));
+                        sensor.getDeviceConfig().setValues(request).applyConfiguration();
                         sensor.save(db);
                     }
                     break;
diff --git a/src/se/hal/struct/AbstractDevice.java b/src/se/hal/struct/AbstractDevice.java
index 7da94cc8..0eb4b41f 100755
--- a/src/se/hal/struct/AbstractDevice.java
+++ b/src/se/hal/struct/AbstractDevice.java
@@ -20,7 +20,7 @@ public abstract class AbstractDevice<T> extends DBBean {
     // Sensor specific data
     private String name;
     private String type;
-    private String config;
+    private String config; // only used to store the deviceData configuration in DB
 
     // Sensor specific data
     private transient T deviceData;
@@ -30,16 +30,23 @@ public abstract class AbstractDevice<T> extends DBBean {
     private User user;
 
 
-
+    public Configurator<T> getDeviceConfig() {
+        T obj = getDeviceData();
+        if (obj != null)
+            return new Configurator<>(obj);
+        return null;
+    }
     public T getDeviceData() {
-        if (config != null && deviceData == null) {
+        if (deviceData == null) {
             try {
                 Class c = Class.forName(type);
                 deviceData = (T) c.newInstance();
 
-                Configurator<T> configurator = new Configurator<>(deviceData);
-                configurator.setValues(JSONParser.read(config));
-                configurator.applyConfiguration();
+                if (config != null && !config.isEmpty()) {
+                    Configurator<T> configurator = getDeviceConfig();
+                    configurator.setValues(JSONParser.read(config));
+                    configurator.applyConfiguration();
+                }
             } catch (Exception e) {
                 logger.log(Level.SEVERE, "Unable to read device data", e);
             }
@@ -48,27 +55,17 @@ public abstract class AbstractDevice<T> extends DBBean {
     }
     public void setDeviceData(T data) {
         this.deviceData = data;
-        updateConfig();
-    }
-
-    public String getConfig() {
-        return config;
-    }
-    public void setConfig(String config) {
-        if (this.config == null || !this.config.equals(config)) {
-            this.config = config;
-            this.deviceData = null; // invalidate current sensor data object
-        }
+        updateConfigString();
     }
     public void save(DBConnection db) throws SQLException {
         if (deviceData != null)
-            updateConfig();
+            updateConfigString();
         else
             this.config = null;
         super.save(db);
     }
-    protected void updateConfig() {
-        Configurator<T> configurator = new Configurator<>(deviceData);
+    protected void updateConfigString() {
+        Configurator<T> configurator = getDeviceConfig();
         this.config = JSONWriter.toString(configurator.getValuesAsNode());
     }
 
diff --git a/web-resource/sensor_config.tmpl b/web-resource/sensor_config.tmpl
index e6c57035..2954170c 100755
--- a/web-resource/sensor_config.tmpl
+++ b/web-resource/sensor_config.tmpl
@@ -24,7 +24,7 @@
                     <td>{{.getName()}}</td>
                     <td>{{.getType()}}</td>
                     <td>{{.isSynced()}}</td>
-                    <td>{{.getConfig()}}</td>
+                    <td>{{.getDeviceConfig()}}</td>
                     <td>
                         <form method="POST">
                             <input type="hidden" name="action" value="remove_local_sensor">
@@ -148,24 +148,24 @@
                 <tr>
                     <td>{{.getName()}}</td>
                     <td>{{.getType()}}</td>
-                    <td>{{.getConfig()}}</td>
+                    <td>{{.getDeviceConfig()}}</td>
                     <td>
                         <form method="POST">
                             <div class="btn-toolbar pull-right">
                                 <input type="hidden" name="action" value="modify_external_sensor">
                                 <input type="hidden" name="id" value="{{.getId()}}">
-                                {{^.sync}}
+                                {{^.isSynced()}}
                                 <input type="hidden" name="sync" value="true">
                                 <button type="submit" class="btn btn-default btn-xs" title="Start Syncing">
                                     <span class="glyphicon glyphicon-save"></span>
                                 </button>
-                                {{/.sync}}
-                                {{#.sync}}
+                                {{/.isSynced()}}
+                                {{#.isSynced()}}
                                 <input type="hidden" name="sync" value="false">
                                 <button type="submit" class="btn btn-danger btn-xs" title="Stop Syncing and Clear Data">
                                     <span class="glyphicon glyphicon-remove"></span>
                                 </button>
-                                {{/.sync}}
+                                {{/.isSynced()}}
                             </div>
                         </form>
                     </td>