diff --git a/WaveshareUARTFingerprintSensor.Sample/SleepDisplay.cs b/WaveshareUARTFingerprintSensor.Sample/SleepDisplay.cs
new file mode 100644
index 0000000..139b7a5
--- /dev/null
+++ b/WaveshareUARTFingerprintSensor.Sample/SleepDisplay.cs
@@ -0,0 +1,106 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Terminal.Gui;
+
+namespace WaveshareUARTFingerprintSensor.Sample
+{
+    public class SleepDisplay : Toplevel
+    {
+        private FingerprintSensor _fingerprintSensor;
+        private int _count;
+        private int _lastID;
+        private Label _sleepModeLabel;
+        private Label _readCountLabel;
+        private Label _lastReadLabel;
+
+        public SleepDisplay(FingerprintSensor fingerprintSensor)
+        {
+            _fingerprintSensor = fingerprintSensor;
+            _count = 0;
+            _lastID = -1;
+
+            Init();
+        }
+
+        private void Init()
+        {
+            ColorScheme = Colors.Error;
+
+            // Creates the top-level window to show
+            var win = new Window("TUIManager")
+            {
+                X = 0,
+                Y = 0,
+
+                // By using Dim.Fill(), it will automatically resize without manual intervention
+                Width = Dim.Fill(),
+                Height = Dim.Fill()
+            };
+
+            win.ColorScheme = Colors.ColorSchemes["Dialog"];
+
+            Add(win);
+
+            // Window Content
+            _sleepModeLabel = new Label("Sleep mode is on, waiting for fingerprints...")
+            {
+                X = 2,
+                Y = 1,
+                Width = Dim.Fill()
+            };
+            _readCountLabel = new Label("Read: 0")
+            {
+                X = Pos.Left(_sleepModeLabel),
+                Y = Pos.Bottom(_sleepModeLabel) + 1,
+                Width = Dim.Fill()
+            };
+            _lastReadLabel = new Label("Last User: - 1")
+            {
+                X = Pos.Left(_readCountLabel),
+                Y = Pos.Bottom(_readCountLabel),
+                Width = Dim.Fill()
+            };
+
+            var stopButton = new Button("_Stop")
+            {
+                X = Pos.Right(this) - 11,
+                Y = Pos.Bottom(this) - 2
+            };
+            stopButton.Clicked += () => { _fingerprintSensor.Waked -= FingerprintSensor_Waked; Application.RequestStop(); };
+
+            win.Add(_sleepModeLabel, _readCountLabel, _lastReadLabel);
+
+            Add(stopButton);
+
+            _fingerprintSensor.Waked += FingerprintSensor_Waked;
+
+            _fingerprintSensor.Sleep();
+        }
+
+        private void UpdateInfo()
+        {
+            _readCountLabel.Text = $"Read: {_count}";
+            _lastReadLabel.Text = $"Last User: {_lastID}";
+        }
+
+        private void FingerprintSensor_Waked(FingerprintSensor sender)
+        {
+            _fingerprintSensor.Wake();
+
+            if (_fingerprintSensor.TryComparison1N(out var userInfo))
+            {
+                _count += 1;
+                _lastID = userInfo.userID;
+
+                Application.MainLoop.Invoke(UpdateInfo);
+            }
+
+            _fingerprintSensor.Sleep();
+        }
+    }
+}
diff --git a/WaveshareUARTFingerprintSensor.Sample/TUIManager.cs b/WaveshareUARTFingerprintSensor.Sample/TUIManager.cs
index b559feb..9fe84b3 100644
--- a/WaveshareUARTFingerprintSensor.Sample/TUIManager.cs
+++ b/WaveshareUARTFingerprintSensor.Sample/TUIManager.cs
@@ -264,7 +264,9 @@ namespace WaveshareUARTFingerprintSensor.Sample
 
         private void SleepButton_Clicked()
         {
-            //TODO
+            var window = new SleepDisplay(_fingerprintSensor);
+
+            Application.Run(window);
         }
 
         private void ClearFingerprintsButton_Clicked()
diff --git a/WaveshareUARTFingerprintSensor.Sample/WaveshareUARTFingerprintSensor.Sample.csproj b/WaveshareUARTFingerprintSensor.Sample/WaveshareUARTFingerprintSensor.Sample.csproj
index 415167a..ac2b348 100644
--- a/WaveshareUARTFingerprintSensor.Sample/WaveshareUARTFingerprintSensor.Sample.csproj
+++ b/WaveshareUARTFingerprintSensor.Sample/WaveshareUARTFingerprintSensor.Sample.csproj
@@ -104,6 +104,7 @@
     <Compile Include="FingerprintDialog.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SleepDisplay.cs" />
     <Compile Include="TUIManager.cs" />
   </ItemGroup>
   <ItemGroup>