Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r400926d021c357856375c533e8b0f985fa312b20 -r9691b4ccfd3732233addfb5820eb03d41c917bab
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 400926d021c357856375c533e8b0f985fa312b20)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 9691b4ccfd3732233addfb5820eb03d41c917bab)
@@ -24,6 +24,7 @@
 from typing import List
 from ..common.msg_defs import RequestRejectReasons, MsgIds
 import struct
+from time import sleep
 
 YES=1
 NO=0
@@ -187,8 +188,16 @@
         @param message: the confirm treatment message
         @return: None
         """
-        self.logger.debug("Received UI confirmation of Treatment Parameters. No FW response will be sent.")
+        self.logger.debug("Received UI confirmation of Treatment Parameters. ")
 
+        state = 0
+        total_seconds = 100
+        for seconds_remaining in range(total_seconds, -1, -1):
+            if seconds_remaining % (total_seconds // 3) == 0:
+                state += 1
+            self.cmd_send_priming_time_remaining(state, seconds_remaining, total_seconds)
+            sleep(0.05)
+
     def _handler_ui_start_treatment(self, message):
         """
         Handler function to start a treatment