diff --git a/README.md b/README.md
index d821a36..e8ab529 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,11 @@ This adapter is still in development. You can use it but without support and hel
 
 ## Changelog
 
+### 0.0.2
+* Language support for objects tree
+
 ### 0.0.1
-* initial release
+* Initial release
 
 ## License
 The MIT License (MIT)
diff --git a/admin/index_m.html b/admin/index_m.html
index c22d3bb..65460db 100644
--- a/admin/index_m.html
+++ b/admin/index_m.html
@@ -104,16 +104,31 @@
                 </div>
             </div>            
             <div class="row">
-                <div class="input-field col s12 m6 l6">
+                <div class="input-field col s12 m4 l4">
                     <input type="number" class="value" id="SystemId" />
                     <label for="SystemId" class="translate">System ID</label>
                     <span class="translate">Log in at https://www.nibeuplink.com. It is the number in the URL.</span>
                 </div>
-                <div class="input-field col s12 m6 l6">
+                <div class="input-field col s12 m4 l4">
                     <input type="number" class="value" id="Interval" min="1" />
                     <label for="Interval" class="translate">Refresh interval</label>
                     <span class="translate">Time in minutes of fetching data from Nibe Uplink.</span>
                 </div>
+                <div class="input-field col s12 m4 l4">
+                    <select class="value" id="Language">
+                        <option value="en" class="translate">English</option>
+                        <option value="de" class="translate">German</option>
+                        <option value="cs" class="translate">Czech</option>
+                        <option value="da" class="translate">Danish</option>
+                        <option value="nl" class="translate">Dutch</option>
+                        <option value="fi" class="translate">Finnish</option>
+                        <option value="fr" class="translate">French</option>
+                        <option value="pl" class="translate">Polish</option>
+                        <option value="sv" class="translate">Swedish</option>
+                    </select>
+                    <label for="Language" class="translate">Language</label>
+                    <span class="translate">The language for naming the data objects.</span>
+                </div>
             </div>
         </div>
     </div>
diff --git a/io-package.json b/io-package.json
index 645ae32..1f200ef 100644
--- a/io-package.json
+++ b/io-package.json
@@ -1,10 +1,14 @@
 {
     "common": {
         "name": "nibeuplink",
-        "version": "0.0.1",
+        "version": "0.0.2",
         "news": {
+            "0.0.2": {
+                "en": "Language support for objects tree",
+                "de": "Unterstützung von Sprachen im Objektbaum"
+            },
             "0.0.1": {
-                "en": "initial adapter",
+                "en": "Initial adapter",
                 "de": "Initiale Version",
                 "ru": "Первоначальный адаптер",
                 "pt": "Versão inicial",
@@ -50,7 +54,8 @@
     },
     "native": {
         "CallbackURL": "https://z0mt3c.github.io/nibe.html",
-        "Interval": 1
+        "Interval": 1,
+        "Language": "en"
     },
     "objects": [
     ]
diff --git a/main.js b/main.js
index 7d84955..a2abea8 100644
--- a/main.js
+++ b/main.js
@@ -168,7 +168,8 @@ function main() {
         redirectUri: adapter.config.CallbackURL,
         interval: refreshInterval * 60,
         authCode: adapter.config.AuthCode,
-        systemId: adapter.config.SystemId
+        systemId: adapter.config.SystemId,
+        language: adapter.config.Language
     }, adapter);
 
     f.on('data', (data) => {
diff --git a/nibe-fetcher.js b/nibe-fetcher.js
index c0b8665..07900ad 100644
--- a/nibe-fetcher.js
+++ b/nibe-fetcher.js
@@ -236,6 +236,7 @@ const defaultOptions = {
   },
   interval: 60,
   timezone: 'Europe/Berlin',
+  language: 'en',
   renewBeforeExpiry: 5 * 60 * 1000,
   sessionStore: Path.join(__dirname, './.session.json')
 }
@@ -408,7 +409,8 @@ class Fetcher extends EventEmitter {
     return new Promise((resolve, reject) => {
       this.wreck.get(`/api/v1/systems/${systemId}/serviceinfo/categories`, {
         headers: {
-          Authorization: 'Bearer ' + this.getSession('access_token')
+          Authorization: 'Bearer ' + this.getSession('access_token'),
+          'Accept-Language': this.options.language,
         },
         json: true
       }, (error, response, payload) => {
@@ -428,7 +430,8 @@ class Fetcher extends EventEmitter {
     return new Promise((resolve, reject) => {
       this.wreck.get(`/api/v1/systems/${systemId}/serviceinfo/categories/status?categoryId=${category}`, {
         headers: {
-          Authorization: 'Bearer ' + this.getSession('access_token')
+          Authorization: 'Bearer ' + this.getSession('access_token'),
+          'Accept-Language': this.options.language,
         },
         json: true
       }, (error, response, payload) => {
@@ -448,7 +451,7 @@ class Fetcher extends EventEmitter {
       async.map(categories, (item, reply) => {
         this.fetchParams(item.categoryId).then((result) => {
           result.forEach((i) => {
-            const name = i.parameterId || (item.categoryId + '_' + i.title.split(/[^a-z]+/gi).join('_')).toLowerCase().replace(/[_]+$/, '');
+            const name = i.parameterId || (item.categoryId + '_' + i.title.split(/[^a-z]+/gi).join('_')).toUpperCase().replace(/[_]+$/, '');
             const parameters = this.options.parameters[name];
             Object.assign(i, {
               key: name,
diff --git a/package.json b/package.json
index 885d2b7..2fb9f07 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "iobroker.nibeuplink",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "nibeuplink",
   "author": {
     "name": "Sebastian Haesselbarth",