diff --git a/ophyd_devices/utils/static_device_test.py b/ophyd_devices/utils/static_device_test.py
index 06ed18d..ec3d2e7 100644
--- a/ophyd_devices/utils/static_device_test.py
+++ b/ophyd_devices/utils/static_device_test.py
@@ -2,6 +2,7 @@ import argparse
 import copy
 import os
 import traceback
+from collections import namedtuple
 from io import TextIOWrapper
 from unittest import mock
 
@@ -16,6 +17,8 @@ try:
 except ImportError:
     device_manager = None
 
+TestResult = namedtuple("TestResult", ["name", "success", "message"])
+
 
 class StaticDeviceAnalysisError(Exception):
     """Error class for static device analysis"""
@@ -26,11 +29,13 @@ class StaticDeviceTest:
 
     def __init__(
         self,
-        output_file: TextIOWrapper,
+        output_file: TextIOWrapper | None = None,
         config_file: str | None = None,
         config_dict: dict[str, dict] | None = None,
     ) -> None:
         """
+        Initialize the StaticDeviceTest class. Either output_file or config_dict must be provided.
+        Config_file will have precedence over config_dict.
         Args:
             config(str): path to the config file
             config_dict(dict): device configuration dictionary. Same formatting as in device_manager
@@ -279,9 +284,10 @@ class StaticDeviceTest:
             text(str): text to print and write
         """
         print(text)
-        self.file.write(text + "\n")
+        if self.file is not None:  # Write only if no output file is provided
+            self.file.write(text + "\n")
 
-    def run_with_list_output(self, connect: bool = False) -> list[tuple[str, bool, str]]:
+    def run_with_list_output(self, connect: bool = False) -> list[TestResult]:
         """
         Run the tests and return a list of tuples with the device name, success status, and error message.
 
@@ -315,10 +321,13 @@ class StaticDeviceTest:
 
                     if return_val == 0:
                         status = True
+                        self.print_and_write(f"{name} is OK")
                 except Exception as e:
                     self.print_and_write(f"ERROR: {name} failed: {e}")
                 finally:
-                    results.append((name, status, "\n".join(print_and_write)))
+                    results.append(
+                        TestResult(name=name, success=status, message="\n".join(print_and_write))
+                    )
                     print_and_write.clear()
         return results
 
diff --git a/tests/test_static_device_test.py b/tests/test_static_device_test.py
index 967ab1f..6145f41 100644
--- a/tests/test_static_device_test.py
+++ b/tests/test_static_device_test.py
@@ -1,12 +1,44 @@
 import os
 import sys
+from unittest import mock
 
 import bec_lib
 
-from ophyd_devices.utils.static_device_test import launch
+from ophyd_devices.utils.static_device_test import StaticDeviceTest, launch
 
 
 def test_static_device_test():
     config_path = os.path.join(os.path.dirname(bec_lib.__file__), "configs", "demo_config.yaml")
     sys.argv = ["", "--config", config_path, "--connect"]
     launch()
+
+
+def test_static_device_test_with_config_dict():
+    """First device is okay, second one is not"""
+    device_dict = {
+        "waveform": {
+            "readoutPriority": "async",
+            "deviceClass": "ophyd_devices.SimWaveform",
+            "deviceConfig": {
+                "waveform_shape": 1000,
+                "sim_init": {
+                    "model": "GaussianModel",
+                    "params": {"amplitude": 100, "center": 500, "sigma": 50},
+                },
+            },
+            "deviceTags": ["detector"],
+            "enabled": True,
+            "readOnly": False,
+            "softwareTrigger": True,
+        },
+        "wrong": {"this is not corect": 0},
+    }
+    test = StaticDeviceTest(config_dict=device_dict)
+    ret = test.run_with_list_output(connect=False)
+    assert len(ret) == 2
+    assert ret[0].name == "waveform"
+    assert ret[0].success is True
+    assert ret[0].message == "waveform is OK"
+    assert ret[1].name == "wrong"
+    assert ret[1].success is False
+    assert isinstance(ret[1].message, str)