diff --git a/api/__init__.py b/api/__init__.py
index 6512225..9c4af0f 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -124,7 +124,7 @@ from .s26_labels import get_label_schema, get_label, set_label, add_label, delet
 
 from .s27_backdrop import get_backdrop_schema, get_backdrop, set_backdrop
 
-from .s29_scada_device import SCADA_DEVICE_TYPE_PRESSURE, SCADA_DEVICE_TYPE_DEMAND, SCADA_DEVICE_TYPE_QUALITY, SCADA_DEVICE_TYPE_LEVEL, SCADA_DEVICE_TYPE_FLOW
+from .s29_scada_device import SCADA_DEVICE_TYPE_PRESSURE, SCADA_DEVICE_TYPE_DEMAND, SCADA_DEVICE_TYPE_QUALITY, SCADA_DEVICE_TYPE_LEVEL, SCADA_DEVICE_TYPE_FLOW, SCADA_DEVICE_TYPE_UNKNOWN
 from .s29_scada_device import get_scada_device_schema, get_scada_device, set_scada_device, add_scada_device, delete_scada_device
 from .s29_scada_device import get_all_scada_device_ids, get_all_scada_devices
 from .clean_api import clean_scada_device
diff --git a/api/s29_scada_device.py b/api/s29_scada_device.py
index 2f3ac18..7af8ee0 100644
--- a/api/s29_scada_device.py
+++ b/api/s29_scada_device.py
@@ -6,6 +6,7 @@ SCADA_DEVICE_TYPE_DEMAND = 'DEMAND'
 SCADA_DEVICE_TYPE_QUALITY = 'QUALITY'
 SCADA_DEVICE_TYPE_LEVEL = 'LEVEL'
 SCADA_DEVICE_TYPE_FLOW = 'FLOW'
+SCADA_DEVICE_TYPE_UNKNOWN = 'UNKNOWN'
 
 
 def get_scada_device_schema(name: str) -> dict[str, dict[str, Any]]:
diff --git a/script/sql/create/29.scada_device.sql b/script/sql/create/29.scada_device.sql
index b7da830..236183c 100644
--- a/script/sql/create/29.scada_device.sql
+++ b/script/sql/create/29.scada_device.sql
@@ -1,4 +1,4 @@
-create type scada_device_type as enum ('PRESSURE', 'DEMAND', 'QUALITY', 'LEVEL', 'FLOW');
+create type scada_device_type as enum ('PRESSURE', 'DEMAND', 'QUALITY', 'LEVEL', 'FLOW', 'UNKNOWN');
 
 create table scada_device
 (
diff --git a/tjnetwork.py b/tjnetwork.py
index f0430a3..20006ec 100644
--- a/tjnetwork.py
+++ b/tjnetwork.py
@@ -149,6 +149,7 @@ SCADA_DEVICE_TYPE_DEMAND   = api.SCADA_DEVICE_TYPE_DEMAND
 SCADA_DEVICE_TYPE_QUALITY  = api.SCADA_DEVICE_TYPE_QUALITY
 SCADA_DEVICE_TYPE_LEVEL    = api.SCADA_DEVICE_TYPE_LEVEL
 SCADA_DEVICE_TYPE_FLOW     = api.SCADA_DEVICE_TYPE_FLOW
+SCADA_DEVICE_TYPE_UNKNOWN  = api.SCADA_DEVICE_TYPE_UNKNOWN
 
 
 SCADA_MODEL_TYPE_JUNCTION  = api.SCADA_MODEL_TYPE_JUNCTION