diff --git a/ophyd_devices/sim/sim_data.py b/ophyd_devices/sim/sim_data.py
index 4314922..4ef5a0a 100644
--- a/ophyd_devices/sim/sim_data.py
+++ b/ophyd_devices/sim/sim_data.py
@@ -88,7 +88,16 @@ class SimulatedDataBase(ABC):
     - update_sim_state:             update the simulated state of the device
     """
 
-    USER_ACCESS = ["params", "select_model", "get_models", "show_all"]
+    # USER_ACCESS = ["params", "select_model", "get_models", "show_all"]
+    # TODO remove
+    USER_ACCESS = [
+        "params",
+        "select_model",
+        "get_models",
+        "show_all",
+        "sim_select_model",
+        "sim_params",
+    ]
 
     def __init__(self, *args, parent=None, **kwargs) -> None:
         """
@@ -127,6 +136,18 @@ class SimulatedDataBase(ABC):
         """Select the active simulation model."""
         self.select_model(model)
 
+    @property
+    def sim_params(self) -> None:
+        """Set the parameters for the active simulation model."""
+        return self.params
+
+    @sim_params.setter
+    def sim_params(self, params: dict):
+        """Set the parameters for the active simulation model."""
+        self.params = params
+
+    # TODO remove after refactoring code in main
+
     def select_model(self, model: str) -> None:
         """
         Method to select the active simulation model.