diff --git a/TBF/BenchControl/RegisterReaders/KPackE/Radio/Radio.cs b/TBF/BenchControl/RegisterReaders/KPackE/Radio/Radio.cs
index 8abb5343c..01efe6299 100644
--- a/TBF/BenchControl/RegisterReaders/KPackE/Radio/Radio.cs
+++ b/TBF/BenchControl/RegisterReaders/KPackE/Radio/Radio.cs
@@ -105,6 +105,25 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.Radio
 		}
 
 
+        /// <summary>
+        /// Register(rr) is called from Initialize() function of RegisterReader-s
+        /// </summary>
+        /// <param name="regReader">RegisterReader reference</param>
+        public void Register(RegisterReader.RegisterReader regReader)
+        {
+            RegReaders.Add(regReader);
+        }
+
+        /// <summary>
+        /// Unregister(rr) is called from StopDevice() function of RegisterReader-s
+        /// </summary>
+        /// <param name="regReader">RegisterReader reference</param>
+        public void Unregister(RegisterReader.RegisterReader regReader)
+        {
+            RegReaders.Remove(regReader);
+        }
+
+
         public void SendAcknowledgeNow()
         {
             serialPort.Write(Ack, 0, Ack.Length);
@@ -166,9 +185,8 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.Radio
                             {
                                 if (rr.SerialNr == serialNr)
                                 {
-                                    double wmState = (double)reading;
-                                    rr.WMStateReceived(wmState);
-                                    EntryForm.WMStateReceived(serialNr, wmState);
+                                    rr.WMStateReceived((int)reading);
+                                    EntryForm.WMStateReceived(serialNr, reading * rr.LtrsPerPulse);
                                     break;
                                 }
                             }
@@ -259,12 +277,9 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.Radio
         /// <summary>Stop this device</summary>
         public void StopDevice()
         {
-			if (serialPort != null)
+			if (serialPort != null && serialPort.IsOpen)
 			{
-				//stopWorkerThread = true;
-				//workerThread.Join(2000);
 				serialPort.Close();
-				serialPort = null;
 			}
 		}
 
diff --git a/TBF/BenchControl/RegisterReaders/KPackE/RegisterReader/RegisterReader.cs b/TBF/BenchControl/RegisterReaders/KPackE/RegisterReader/RegisterReader.cs
index 9b3cbeb88..56b2e5e20 100644
--- a/TBF/BenchControl/RegisterReaders/KPackE/RegisterReader/RegisterReader.cs
+++ b/TBF/BenchControl/RegisterReaders/KPackE/RegisterReader/RegisterReader.cs
@@ -1,5 +1,5 @@
 ///
-/// Copyright (c) 2018 Sensus Slovensko a.s.
+/// Copyright (c) 2018-2021 Sensus Slovensko a.s.
 ///
 using System;
 using System.Collections.Generic;
@@ -8,7 +8,7 @@ using TBF.Boxes;
 
 namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
 {
-	public class RegisterReader : ComponentBase, GenericDevices.IRegReader, IOperation
+	public class RegisterReader : ComponentBase, Generic.IDevice, GenericDevices.IRegReader, IOperation
 	{
 		private static readonly ILog log = LogManager.GetLogger(typeof(RegisterReader));
         public override string ToString() { return string.Format("{0}({1})", ClassName, Cfg.ToString(-1)); }
@@ -41,39 +41,26 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
         /// Called by Radio when data for SerialNr were received
         /// </summary>
         /// <param name="wmState"></param>
-        public void WMStateReceived(double wmState)
+        public void WMStateReceived(int wmState)
         {
+            WMPulses = wmState;
+
             if (IsEndOfTest)
             {
-                endWMState = wmState;
+                EndWMState = wmState;
             }
             else
             {
-                beginWMState = wmState;
+                BeginWMState = wmState;
             }
         }
 
 
-		double beginWMState;
-		public double BeginWMState
-		{
-			get { return beginWMState; }
-			set { beginWMState = value; }
-		}
-
-		double endWMState;
-		public double EndWMState
-		{
-			get { return endWMState; }
-			set { endWMState = value; }
-		}
-
-		public double WMVolume { get { return endWMState - beginWMState; } }
-
-		public int WMPulses { get { return (int)(WMVolume / LtrsPerPulse); } }
-
-		int wmRefPulses;
-		public int WMRefPulses { get { return wmRefPulses; } }
+		public int WMPulses { get; set; }
+        public int WMRefPulses { get; set; }
+        public double WMVolume { get { return WMPulses * LtrsPerPulse; } }
+        public double BeginWMState { get; set; }
+        public double EndWMState { get; set; }
 
 
 		public RegisterReader() { }
@@ -92,6 +79,7 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
 
             controlBoard = StateMachine.ControlBoard;
 
+            radio.Register(this);
             Clear();
 
             log.FatalFormat("{0} initialized: {1}", Name, this);
@@ -100,11 +88,21 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
 		public void Clear()
 		{
 			log.DebugFormat("{0}:Clear()", Name);
-			beginWMState = 0;
-			endWMState = 0;
-			wmRefPulses = 0;
+			BeginWMState = 0;
+			EndWMState = 0;
+			WMRefPulses = 0;
 		}
 
+        public void StopDevice()
+        {
+            radio.Unregister(this);
+        }
+
+        public void RunDeviceBefore() { }
+        public void RunDeviceAfter() { }
+        public void StopDevice2() { }
+
+
 
 		public void TestCompleted()
 		{
@@ -123,7 +121,7 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
 
 		private void ReadPulses()
 		{
-            wmRefPulses = (controlBoard != null) ? controlBoard.EtPulses(0) : 0;
+            WMRefPulses = (controlBoard != null) ? controlBoard.EtPulses(0) : 0;
 		}
 
 		/// <summary>Start this operation</summary>
@@ -141,8 +139,6 @@ namespace TBF.BenchControl.RegisterReaders.KPackE.RegisterReader
 		}
 
 		/// <summary>Stop this operation</summary>
-		public void Stop()
-		{
-		}
+		public void Stop() { }
     }
 }
diff --git a/TBF/Properties/AssemblyInfo.cs b/TBF/Properties/AssemblyInfo.cs
index de7b952b0..05ff44df4 100644
--- a/TBF/Properties/AssemblyInfo.cs
+++ b/TBF/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("2.26.1623.0")]
-[assembly: AssemblyFileVersion("2.26.1623.0")]
+[assembly: AssemblyVersion("2.26.1636.0")]
+[assembly: AssemblyFileVersion("2.26.1636.0")]