diff --git a/revpimodio2/__init__.py b/revpimodio2/__init__.py
index 3e2ec10..b668d20 100644
--- a/revpimodio2/__init__.py
+++ b/revpimodio2/__init__.py
@@ -96,7 +96,7 @@ def consttostr(value) -> str:
 
 
 # Benötigte Klassen importieren
-from .pictory import AIO, COMPACT, DI, DO, DIO, FLAT
+from .pictory import ProductType, AIO, COMPACT, DI, DO, DIO, FLAT
 from .helper import Cycletools, EventCallback
 from .modio import RevPiModIO, RevPiModIODriver, RevPiModIOSelected, run_plc
 from .netio import RevPiNetIO, RevPiNetIODriver, RevPiNetIOSelected
diff --git a/revpimodio2/device.py b/revpimodio2/device.py
index 12ac290..e61dacc 100644
--- a/revpimodio2/device.py
+++ b/revpimodio2/device.py
@@ -8,6 +8,8 @@ __author__ = "Sven Sager"
 __copyright__ = "Copyright (C) 2020 Sven Sager"
 __license__ = "LGPLv3"
 
+from .pictory import ProductType
+
 
 class DeviceList(object):
     """Basisklasse fuer direkten Zugriff auf Device Objekte."""
@@ -340,7 +342,7 @@ class Device(object):
                     iotype,
                     "little",
                     # Bei AIO (103) signed auf True setzen
-                    self._producttype == 103
+                    self._producttype == ProductType.AIO
                 )
 
             # IO registrieren
diff --git a/revpimodio2/modio.py b/revpimodio2/modio.py
index c6e6d93..c3a9d54 100644
--- a/revpimodio2/modio.py
+++ b/revpimodio2/modio.py
@@ -18,6 +18,8 @@ __author__ = "Sven Sager"
 __copyright__ = "Copyright (C) 2020 Sven Sager"
 __license__ = "LGPLv3"
 
+from .pictory import ProductType
+
 
 class RevPiModIO(object):
     """
@@ -236,25 +238,25 @@ class RevPiModIO(object):
             if device["type"] == "BASE":
                 # Basedevices
                 pt = int(device["productType"])
-                if pt == 95:
+                if pt == ProductType.REVPI_CORE:
                     # RevPi Core
                     dev_new = devicemodule.Core(
                         self, device, simulator=self._simulator
                     )
                     self.core = dev_new
-                elif pt == 105:
+                elif pt == ProductType.REVPI_CONNECT:
                     # RevPi Connect
                     dev_new = devicemodule.Connect(
                         self, device, simulator=self._simulator
                     )
                     self.core = dev_new
-                elif pt == 104:
+                elif pt == ProductType.REVPI_COMPACT:
                     # RevPi Compact
                     dev_new = devicemodule.Compact(
                         self, device, simulator=self._simulator
                     )
                     self.core = dev_new
-                elif pt == 135:
+                elif pt == ProductType.REVPI_FLAT:
                     # RevPi Flat
                     dev_new = devicemodule.Flat(
                         self, device, simulator=self._simulator
@@ -268,7 +270,7 @@ class RevPiModIO(object):
             elif device["type"] == "LEFT_RIGHT":
                 # IOs
                 pt = int(device["productType"])
-                if pt == 96 or pt == 97 or pt == 98:
+                if pt == ProductType.DIO or pt == ProductType.DI or pt == ProductType.DO:
                     # DIO / DI / DO
                     dev_new = devicemodule.DioModule(
                         self, device, simulator=self._simulator
diff --git a/revpimodio2/pictory.py b/revpimodio2/pictory.py
index 145af7d..ca07a5b 100644
--- a/revpimodio2/pictory.py
+++ b/revpimodio2/pictory.py
@@ -14,6 +14,37 @@ __license__ = "LGPLv3"
 # - RevPiConCan_20180425_1_0.rap
 # - RevPiGateCANopen_20161102_1_0.rap
 
+class ProductType:
+    GATEWAY_CAN_OPEN = 71
+    GATEWAY_CCLINK = 72
+    GATEWAY_DEV_NET = 73
+    GATEWAY_ETHERCAT = 74
+    GATEWAY_ETHERNET_IP = 75
+    GATEWAY_POWERLINK = 76
+    GATEWAY_PROFIBUS = 77
+    GATEWAY_PROFINET_RT = 78
+    GATEWAY_PROFINET_IRT = 79
+    GATEWAY_CAN_OPEN_MASTER = 80
+    GATEWAY_SERCOS3 = 81
+    GATEWAY_SERIAL = 82
+    GATEWAY_PROFINET_SITARA = 83
+    GATEWAY_PROFINET_IRT_MASTER = 84
+    GATEWAY_ETHERCAT_MASTER = 85
+    GATEWAY_MODBUS_RTU = 92
+    GATEWAY_MODBUS_TCP = 83
+    GATEWAY_DMX = 199
+
+    DIO = 96
+    DI = 97
+    DO = 98
+    AIO = 103
+    MIO = 118
+
+    REVPI_CORE = 95
+    REVPI_COMPACT = 104
+    REVPI_CONNECT = 105
+    REVPI_FLAT = 135
+
 
 class AIO:
     """Memory value mappings for RevPi AIO 1.0 (RevPiAIO_20170301_1_0.rap)."""