diff --git a/admin/app/translations.js b/admin/app/translations.js
index 93afe6ec..49d5fa42 100644
--- a/admin/app/translations.js
+++ b/admin/app/translations.js
@@ -544,6 +544,7 @@ function config($translateProvider) {
             GATEWAY: {
                 GATEWAY: 'Gateway',
                 TOKEN: 'Token',
+                LAST_SEEN_DATETIME: 'Last Seen Datetime',
                 SELECT_GATEWAY: 'Select Gateway',
                 ADD_GATEWAY: 'Add Gateway',
                 EDIT_GATEWAY: 'Edit Gateway',
@@ -1605,7 +1606,8 @@ function config($translateProvider) {
             },
             GATEWAY: {
                 GATEWAY: '网关',
-                TOKEN: 'Token',
+                TOKEN: '令牌',
+                LAST_SEEN_DATETIME: '最后在线时间',
                 SELECT_GATEWAY: '选择网关',
                 ADD_GATEWAY: '添加网关',
                 EDIT_GATEWAY: '编辑网关',
@@ -2655,7 +2657,8 @@ function config($translateProvider) {
             },
             GATEWAY: {
                 GATEWAY: 'Tor',
-                TOKEN: 'Zeichen',
+                TOKEN: 'Token',
+                LAST_SEEN_DATETIME: 'Zuletzt gesehen datetime',
                 SELECT_GATEWAY: 'Wählen Sie ein Gateway',
                 ADD_GATEWAY: 'Gateway hinzufügen',
                 EDIT_GATEWAY: 'Gateway bearbeiten',
diff --git a/admin/views/settings/gateway/gateway.html b/admin/views/settings/gateway/gateway.html
index 7842bc4e..5ba5a4ed 100644
--- a/admin/views/settings/gateway/gateway.html
+++ b/admin/views/settings/gateway/gateway.html
@@ -14,6 +14,7 @@
 											<th class="text-center">{{'SETTING.ID' | translate}}</th>
 											<th class="text-center">{{'SETTING.NAME' | translate}}</th>
 											<th class="text-center">{{'GATEWAY.TOKEN' | translate}}</th>
+											<th class="text-center">{{'GATEWAY.LAST_SEEN_DATETIME' | translate}}</th>
 											<th class="text-center">{{'SETTING.ACTION' | translate}}</th>
 										</tr>
 									</thead>
@@ -22,6 +23,7 @@
 											<td class="text-center">{{ gateway.id }}</td>
 											<td class="text-center">{{ gateway.name }}</td>
 											<td class="text-center">{{ gateway.token}}</td>
+											<td class="text-center">{{ gateway.last_seen_datetime | date:'yyyy-MM-dd HH:mm:ss'}}</td>
 											<td class="text-center">
 												<a class="btn btn-primary btn-rounded btn-xs" ng-click="editGateway(gateway)" >{{'SETTING.EDIT' | translate}}</a>
 												<a ng-click="deleteGateway(gateway)" class="btn btn-danger btn-rounded btn-xs" >{{'SETTING.DELETE' | translate}}</a>
diff --git a/admin/views/settings/knowledgefile/knowledgefile.html b/admin/views/settings/knowledgefile/knowledgefile.html
index 627394d5..61321905 100644
--- a/admin/views/settings/knowledgefile/knowledgefile.html
+++ b/admin/views/settings/knowledgefile/knowledgefile.html
@@ -20,12 +20,9 @@
 								<tbody>
 									<tr ng-repeat="knowledgefile in knowledgefiles">
 										<td class="text-center">{{ knowledgefile.id }}</td>
-										<td class="text-center"><a href="./upload/{{knowledgefile.uuid}}"
-												download="{{knowledgefile.file_name}}">{{ knowledgefile.file_name }}</a>
-										</td>
+										<td class="text-center"><a href="./upload/{{knowledgefile.uuid}}" download="{{knowledgefile.file_name}}">{{ knowledgefile.file_name }}</a></td>
 										<td class="text-center">{{ knowledgefile.user_display_name }}</td>
-										<td class="text-center">
-											{{ knowledgefile.upload_datetime | date:'yyyy-MM-dd HH:mm'}}</td>
+										<td class="text-center">{{ knowledgefile.upload_datetime | date:'yyyy-MM-dd HH:mm'}}</td>
 										<td class="text-center">
 											<a ng-click="restoreKnowledgeFile(knowledgefile)"
 												class="btn btn-danger btn-rounded btn-xs">{{'KNOWLEDGEFILE.RESTORE' | translate}}</a>
diff --git a/myems-api/core/gateway.py b/myems-api/core/gateway.py
index 5268930e..1cd28136 100644
--- a/myems-api/core/gateway.py
+++ b/myems-api/core/gateway.py
@@ -3,7 +3,7 @@ import simplejson as json
 import mysql.connector
 import config
 import uuid
-from datetime import datetime
+from datetime import datetime, timezone
 
 
 class GatewayCollection:
@@ -18,7 +18,7 @@ class GatewayCollection:
     @staticmethod
     def on_get(req, resp):
         cnx = mysql.connector.connect(**config.myems_system_db)
-        cursor = cnx.cursor()
+        cursor = cnx.cursor(dictionary=True)
 
         query = (" SELECT id, name, uuid, token, last_seen_datetime_utc "
                  " FROM tbl_gateways "
@@ -29,19 +29,14 @@ class GatewayCollection:
         cnx.disconnect()
 
         result = list()
-        now = datetime.utcnow().replace(second=0, microsecond=0, tzinfo=None)
         if rows is not None and len(rows) > 0:
             for row in rows:
-                last_seen_time = row[4]
-                if last_seen_time is not None and (now - last_seen_time).total_seconds() > 5 * 60:
-                    status = "online"
-                else:
-                    status = "offline"
-                meta_result = {"id": row[0], "name": row[1], "uuid": row[2],
-                               "token": row[3],
-                               "last_seen_datetime": row[4].timestamp() * 1000 if isinstance(row[4],
-                                                                                             datetime) else None,
-                               "status": status}
+                meta_result = {"id": row['id'], "name": row['name'], "uuid": row['uuid'],
+                               "token": row['token'],
+                               "last_seen_datetime":
+                                   row['last_seen_datetime_utc'].replace(tzinfo=timezone.utc).timestamp() * 1000
+                               if isinstance(row['last_seen_datetime_utc'], datetime) else None,
+                               }
                 result.append(meta_result)
 
         resp.body = json.dumps(result)
@@ -105,7 +100,7 @@ class GatewayItem:
                                    description='API.INVALID_GATEWAY_ID')
 
         cnx = mysql.connector.connect(**config.myems_system_db)
-        cursor = cnx.cursor()
+        cursor = cnx.cursor(dictionary=True)
 
         query = (" SELECT id, name, uuid, token, last_seen_datetime_utc "
                  " FROM tbl_gateways "
@@ -118,17 +113,13 @@ class GatewayItem:
             raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
                                    description='API.GATEWAY_NOT_FOUND')
 
-        now = datetime.utcnow().replace(second=0, microsecond=0, tzinfo=None)
-        last_seen_time = row[4]
-        if last_seen_time is not None and (now - last_seen_time).total_seconds() > 5 * 60:
-            status = "online"
-        else:
-            status = "offline"
-
-        result = {"id": row[0], "name": row[1], "uuid": row[2],
-                  "token": row[3],
-                  "last_seen_datetime": row[4].timestamp()*1000 if isinstance(row[4], datetime) else None,
-                  "status": status}
+        result = {"id": row['id'],
+                  "name": row['name'],
+                  "uuid": row['uuid'],
+                  "token": row['token'],
+                  "last_seen_datetime":
+                      row['last_seen_datetime_utc'].replace(tzinfo=timezone.utc).timestamp()*1000
+                  if isinstance(row['last_seen_datetime_utc'], datetime) else None}
 
         resp.body = json.dumps(result)