diff --git a/src/ophyd_async/tango/sim/__init__.py b/src/ophyd_async/tango/sim/__init__.py
index 78fffae2aa..dafb5c2ca2 100644
--- a/src/ophyd_async/tango/sim/__init__.py
+++ b/src/ophyd_async/tango/sim/__init__.py
@@ -9,4 +9,16 @@
     "TangoCounter",
     "TangoMover",
     "TangoDetector",
+    "device_content",
 ]
+
+device_content = (
+    {
+        "class": DemoMover,
+        "devices": [{"name": "sim/motor/1"}],
+    },
+    {
+        "class": DemoCounter,
+        "devices": [{"name": "sim/counter/1"}, {"name": "sim/counter/2"}],
+    },
+)