diff --git a/docu/docs/modul/double_filter.md b/docu/docs/modul/double_filter.md
new file mode 100644
index 0000000..e857c79
--- /dev/null
+++ b/docu/docs/modul/double_filter.md
@@ -0,0 +1,49 @@
+# <center>Double Filter</center> 
+---
+
+## Beschreibung
+Mit diesem Modul ist es möglich, die Pakete auf Duplikate zu Filtern. Je nach Konfiguration werden doppelte Pakete im aktuellen Router weitergeleitet oder verworfen.
+
+## Unterstütze Alarmtypen
+- Fms
+- Pocsag
+- Zvei
+
+## Resource
+`filter.doubleFilter`
+
+## Konfiguration
+|Feld|Beschreibung|Default|
+|----|------------|-------|
+|ignoreTime|Zeitfenster für doppelte Pakte in Sekunden|10|
+|maxEntry|Maximale Anzahl an Paketen in der Vergleichsliste|20|
+|pocsagFields|Liste der Pocsag Felder zum Vergleichen: `ric`, `subric` und/oder `message`|`ric,subric`|
+
+**Beispiel:**
+```yaml
+- type: module
+  res: filter.doubleFilter
+  config:
+    ignoreTime: 30
+    maxEntry: 10
+    pocsagFields:
+      - ric
+      - subric
+```
+
+---
+## Modul Abhängigkeiten
+- keine
+
+---
+## Externe Abhängigkeiten
+- keine
+
+---
+## Paket Modifikationen
+- keine
+
+---
+## Zusätzliche Wildcards
+- keine
+
diff --git a/docu/mkdocs.yml b/docu/mkdocs.yml
index df708b9..ff4f904 100644
--- a/docu/mkdocs.yml
+++ b/docu/mkdocs.yml
@@ -22,6 +22,7 @@ nav:
       - Geocoding: modul/geocoding.md
       - Mode Filter: modul/mode_filter.md
       - Regex Filter: modul/regex_filter.md
+      - Double Filter: modul/double_filter.md
   - Plugins:
       - Http: plugin/http.md
       - Telegram: plugin/telegram.md
diff --git a/module/filter/___doubleFilter.py b/module/filter/doubleFilter.py
similarity index 53%
rename from module/filter/___doubleFilter.py
rename to module/filter/doubleFilter.py
index aa8ba9f..4b0a20a 100644
--- a/module/filter/___doubleFilter.py
+++ b/module/filter/doubleFilter.py
@@ -10,33 +10,45 @@
                      by Bastian Schroll
 
 @file:        doubleFilter.py
-@date:        15.01.2018
-@author:      Bastian Schroll
-@description: Class to implement a filter for double alarms
-@todo test, refactor and document / check_msg is not implemented yet
+@date:        09.07.2020
+@author:      Bastian Schroll, b-watch
+@description: Filter module for double packages
 """
 import logging
+from module.moduleBase import ModuleBase
+
+# ###################### #
+# Custom plugin includes #
 import time
+# ######################
 
 logging.debug("- %s loaded", __name__)
 
 
-class DoubleFilter:
-    """!Double Filter Class"""
-
+class BoswatchModule(ModuleBase):
+    """!Description of the Module"""
     def __init__(self, config):
-        """!init"""
-        self._config = config
+        """!Do not change anything here!"""
+        super().__init__(__name__, config)  # you can access the config class on 'self.config'
         self._filterLists = {}
+        logging.debug("Configured ignoreTime: %d", self.config.get("ignoreTime", default=10))
+        logging.debug("Configured maxEntry: %d", self.config.get("maxEntry", default=10))
 
-    def filter(self, bwPacket):
+    def onLoad(self):
+        """!Called by import of the plugin
+        Remove if not implemented"""
+        pass
 
+    def doWork(self, bwPacket):
+        """!start an run of the module.
+
+        @param bwPacket: A BOSWatch packet instance"""
         if bwPacket.get("mode") == "fms":
-            scanWord = "fms"
+            filterFields = ["fms"]
         elif bwPacket.get("mode") == "pocsag":
-            scanWord = "ric"
+            filterFields = self.config.get("pocsagFields", default=["ric", "subric"])
         elif bwPacket.get("mode") == "zvei":
-            scanWord = "zvei"
+            filterFields = ["tone"]
         else:
             logging.error("No Filter for '%s'", bwPacket)
             return False
@@ -45,31 +57,36 @@ class DoubleFilter:
             logging.debug("create new doubleFilter list for '%s'", bwPacket.get("mode"))
             self._filterLists[bwPacket.get("mode")] = []
 
-        logging.debug("scanWord for '%s' is '%s'", bwPacket.get("mode"), scanWord)
+        logging.debug("filterFields for '%s' is '%s'", bwPacket.get("mode"), ", ".join(filterFields))
 
-        return self._check(bwPacket, scanWord)
+        return self._check(bwPacket, filterFields)
 
-    def _check(self, bwPacket, scanWord):
+    def onUnload(self):
+        """!Called by destruction of the plugin
+        Remove if not implemented"""
+        pass
+
+    def _check(self, bwPacket, filterFields):
         self._filterLists[bwPacket.get("mode")].insert(0, bwPacket)
 
         # delete entries that are to old
         counter = 0
         for listPacket in self._filterLists[bwPacket.get("mode")][1:]:  # [1:] skip first entry, thats the new one
-            if listPacket.get("timestamp") < (time.time() - self._config["ignoreTime"]):
+            if float(listPacket.get("timestamp")) < (time.time() - self.config.get("ignoreTime", default=10)):
                 self._filterLists[bwPacket.get("mode")].remove(listPacket)
                 counter += 1
         if counter:
             logging.debug("%d old entry(s) removed", counter)
 
         # delete last entry if list is to big
-        if len(self._filterLists[bwPacket.get("mode")]) > self._config["maxEntry"]:
+        if len(self._filterLists[bwPacket.get("mode")]) > self.config.get("maxEntry", default=20):
             logging.debug("MaxEntry reached - delete oldest")
             self._filterLists[bwPacket.get("mode")].pop()
 
         for listPacket in self._filterLists[bwPacket.get("mode")][1:]:  # [1:] skip first entry, thats the new one
-            if listPacket.get(scanWord) is bwPacket.get(scanWord):
-                logging.debug("found duplicate: %s", bwPacket.get(scanWord))
+            if all(listPacket.get(x) == bwPacket.get(x) for x in filterFields):
+                logging.debug("found duplicate: %s", bwPacket.get("mode"))
                 return False
 
         logging.debug("doubleFilter ok")
-        return True
+        return None