diff --git a/ophyd_devices/sim/__init__.py b/ophyd_devices/sim/__init__.py
index e180c00..3c8036c 100644
--- a/ophyd_devices/sim/__init__.py
+++ b/ophyd_devices/sim/__init__.py
@@ -1,2 +1,9 @@
-from .sim import SynAxisMonitor, SynAxisOPAAS, SynFlyer, SynSignalRO, SynSLSDetector
+from .sim import (
+    SynAxisMonitor,
+    SynAxisOPAAS,
+    SynDynamicComponents,
+    SynFlyer,
+    SynSignalRO,
+    SynSLSDetector,
+)
 from .sim_xtreme import SynXtremeOtf
diff --git a/ophyd_devices/sim/sim.py b/ophyd_devices/sim/sim.py
index 031c616..d1e3607 100644
--- a/ophyd_devices/sim/sim.py
+++ b/ophyd_devices/sim/sim.py
@@ -5,9 +5,11 @@ import warnings
 from typing import List
 
 import numpy as np
-from bec_lib import messages, MessageEndpoints, bec_logger
+from bec_lib import MessageEndpoints, bec_logger, messages
 from ophyd import Component as Cpt
-from ophyd import Device, DeviceStatus, OphydObject, PositionerBase, Signal
+from ophyd import Device, DeviceStatus
+from ophyd import DynamicDeviceComponent as Dcpt
+from ophyd import OphydObject, PositionerBase, Signal
 from ophyd.sim import EnumSignal, SynSignal, _ReadbackSignal, _SetpointSignal
 from ophyd.utils import LimitError, ReadOnlyError
 
@@ -865,6 +867,10 @@ class SynGaussBEC(Device):
         return self.val.get()
 
 
+class SynDynamicComponents(Device):
+    messages = Dcpt({f"message{i}": (SynSignal, None, {"name": f"msg{i}"}) for i in range(1, 6)})
+
+
 class SynDeviceSubOPAAS(Device):
     zsub = Cpt(SynAxisOPAAS, name="zsub")