Index: simulator/run.py
===================================================================
diff -u -r0c65b0562c34edf23a06bc224a00a7fbc340e9de -r313132b681260cc0761c65d46200adb40b72f478
--- simulator/run.py	(.../run.py)	(revision 0c65b0562c34edf23a06bc224a00a7fbc340e9de)
+++ simulator/run.py	(.../run.py)	(revision 313132b681260cc0761c65d46200adb40b72f478)
@@ -7,6 +7,7 @@
 from PySide2 import QtCore, QtWidgets
 from simulator.loader import Simulator
 from dialin.ui.hd_simulator import HDSimulator
+from dialin.ui.hd_simulator_alarms import HDAlarmsSimulator, HIGH
 
 
 def main():
@@ -39,6 +40,10 @@
     if HDSimulator.instanceCount > 1:
         raise Exception("more than one instance of HDSimulator shall not be created.")
     else:
+        if HDAlarmsSimulator.instanceCount > 1:
+            raise Exception("more than one instance of HDAlarmsSimulator shall not be created.")
+        else:
+            print("HDAlarmsSimulator number of instances is ", HDAlarmsSimulator.instanceCount)
         print("HDSimulator number of instances is ", HDSimulator.instanceCount)