Index: simulator/plugins/treatmentranges/loader.py
===================================================================
diff -u -red2d7cb5c8c2059444fd17cd4e1c0975461a903c -r7f0678d0f61fa99a35a1f34fac6c36e12ba93f20
--- simulator/plugins/treatmentranges/loader.py	(.../loader.py)	(revision ed2d7cb5c8c2059444fd17cd4e1c0975461a903c)
+++ simulator/plugins/treatmentranges/loader.py	(.../loader.py)	(revision 7f0678d0f61fa99a35a1f34fac6c36e12ba93f20)
@@ -53,7 +53,8 @@
         :return: none
         """
         self.timer.timeout.connect(self.do_ranges_data)
-        # self.timer.timeout.connect(self.do_duration_data)
+        
+        self.timer.timeout.connect(self.do_duration_data)
         self.sldDurationValue.valueChanged.connect(self.do_duration_data)
 
     def _init_widgets(self):
@@ -70,10 +71,11 @@
         sends the duration message
         :return: none
         """
-        value = self.sldDurationValue.value()
-        self.hd_simulator.cmd_set_treatment_time(
-            self.spnDurationMax.value() * 60, value
-        )
+        if self.chkRangesBroadcast.isChecked():
+            value = self.sldDurationValue.value()
+            self.hd_simulator.cmd_set_treatment_time(
+                self.spnDurationMax.value() * 60, value
+            )
 
     @Slot()
     def do_ranges_data(self):