diff --git a/src/nqrduck_spectrometer/view.py b/src/nqrduck_spectrometer/view.py
index 4288544..a723f7e 100644
--- a/src/nqrduck_spectrometer/view.py
+++ b/src/nqrduck_spectrometer/view.py
@@ -14,6 +14,7 @@ class SpectrometerView(ModuleView):
         self._ui_form = Ui_Form()
         self.widget = widget
         self._ui_form.setupUi(self)
+        self._actions = dict()
 
     def on_active_spectrometer_changed(self, module):
         self._ui_form.stackedWidget.setCurrentWidget(module._inner_view)
@@ -34,17 +35,29 @@ class SpectrometerView(ModuleView):
         menu_item = QMenu("Hardware")
         logger.debug("Available spectrometer models: %s", self._module.model._available_spectrometers)
 
-        actions = []
+        
         for spectrometer_name, spectrometer_module in self._module.model._available_spectrometers.items():
             logger.debug("Adding module to menu: %s", spectrometer_name)
-            select_action = QAction(spectrometer_module.model.toolbar_name, menu_item)
-            select_action.triggered.connect(spectrometer_module.set_active)
-            actions.append(select_action)
+            self._actions[spectrometer_name] = QAction(spectrometer_module.model.toolbar_name, menu_item)
+            self._actions[spectrometer_name].triggered.connect(spectrometer_module.set_active)
+            # Make it checkable
+            self._actions[spectrometer_name].setCheckable(True)
         
-        self.add_menubar_item.emit("Hardware", actions)
+        # Get last added action and check it
+        last_added_action = self._actions[list(self._actions.keys())[-1]]
+        last_added_action.setChecked(True)
+
+        self.add_menubar_item.emit("Hardware", list(self._actions.values()))
 
     @pyqtSlot(str)
     def on_menu_button_clicked(self, spectrometer_name):
+        """This method is called when a menu button is clicked. It changes the active spectrometer to the one that was clicked.
+        It also unchecks all other menu buttons.
+
+        :param spectrometer_name: The name of the spectrometer that was clicked."""
         logger.debug("Active module changed to: %s", spectrometer_name)
+        for action in self._actions.values():
+            action.setChecked(False)
+        self._actions[spectrometer_name].setChecked(True)
         self._module.model.active_spectrometer = self._module.model.available_spectrometers[spectrometer_name]