diff --git a/Assets/MirageXR/Player/Prefabs/eROBSON/Prefabs/o9_bargraph.prefab b/Assets/MirageXR/Player/Prefabs/eROBSON/Prefabs/o9_bargraph.prefab
index a02f2f74c..a06464cc8 100644
--- a/Assets/MirageXR/Player/Prefabs/eROBSON/Prefabs/o9_bargraph.prefab
+++ b/Assets/MirageXR/Player/Prefabs/eROBSON/Prefabs/o9_bargraph.prefab
@@ -341,7 +341,7 @@ GameObject:
   - component: {fileID: 3602013116561168751}
   - component: {fileID: 8365970246065829508}
   m_Layer: 0
-  m_Name: Line003
+  m_Name: led5
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -507,7 +507,7 @@ GameObject:
   - component: {fileID: 2250746998940470243}
   - component: {fileID: 3878434631385909016}
   m_Layer: 0
-  m_Name: Line005
+  m_Name: led4
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -590,7 +590,7 @@ GameObject:
   - component: {fileID: 6502004952187121599}
   - component: {fileID: 1276829913763581589}
   m_Layer: 0
-  m_Name: Line007
+  m_Name: led3
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -839,7 +839,7 @@ GameObject:
   - component: {fileID: 7408299993418523812}
   - component: {fileID: 7380300605935270615}
   m_Layer: 0
-  m_Name: Line011
+  m_Name: led1
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -1287,7 +1287,7 @@ GameObject:
   - component: {fileID: 6127392726229386877}
   - component: {fileID: 8225208080581790013}
   m_Layer: 0
-  m_Name: Line009
+  m_Name: led2
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -1404,6 +1404,7 @@ GameObject:
   - component: {fileID: 5018361853446732302}
   - component: {fileID: 5104182535571999677}
   - component: {fileID: 484503428188708966}
+  - component: {fileID: 91869103912858566}
   m_Layer: 0
   m_Name: o9_bargraph
   m_TagString: Untagged
@@ -1584,6 +1585,26 @@ AudioSource:
     m_PreInfinity: 2
     m_PostInfinity: 2
     m_RotationOrder: 4
+--- !u!114 &91869103912858566
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 8503723872563970172}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 7aa4ce0f82cc57145a4ca433e2a551c9, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  lightRenderers:
+  - {fileID: 7380300605935270615}
+  - {fileID: 8225208080581790013}
+  - {fileID: 1276829913763581589}
+  - {fileID: 3878434631385909016}
+  - {fileID: 8365970246065829508}
+  onMaterial: {fileID: 2100000, guid: 57315aa7aea1fd948b6f2ead88d80900, type: 2}
+  offMaterial: {fileID: 2100000, guid: 877908f016616ae409870e24c1a4147b, type: 2}
 --- !u!1 &8824843978635763748
 GameObject:
   m_ObjectHideFlags: 0
diff --git a/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs
new file mode 100644
index 000000000..efdffccc9
--- /dev/null
+++ b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs
@@ -0,0 +1,62 @@
+using UnityEngine;
+
+public class BargraphController : MonoBehaviour
+{
+    [SerializeField] private Renderer[] lightRenderers;
+    [SerializeField] private Material onMaterial;
+    [SerializeField] private Material offMaterial;
+
+
+    /// <summary>
+    /// turn on the bargraph light depends on the power
+    /// </summary>
+    /// <param name="status">is connected or not</param>
+    /// <param name="power">the power received to this bit</param>
+    public void TurnOnLights(bool status, float power)
+    {
+        // Turn off all lights first
+        TurnOffAllLights();
+
+        //bit is disconnected
+        if (!status)
+        {
+            return;
+        }
+
+        // Determine how many lights to turn on based on the power level
+        var lightsToTurnOn = power switch
+        {
+            > 0f and <= 0.2f => 1,
+            > 0.2f and <= 0.4f => 2,
+            > 0.4f and <= 0.6f => 3,
+            > 0.6f and <= 0.8f => 4,
+            > 0.8f and <= 1.0f => 5,
+            _ => 0
+        };
+
+        // Turn on the appropriate number of lights
+        for (var i = 0; i < lightsToTurnOn; i++)
+        {
+            lightRenderers[i].material = onMaterial;
+        }
+    }
+
+
+    private void Start()
+    {
+        TurnOffAllLights();
+    }
+
+
+
+    /// <summary>
+    /// Turn off all lights first
+    /// </summary>
+    private void TurnOffAllLights()
+    {
+        foreach (var led in lightRenderers)
+        {
+            led.material = offMaterial;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs.meta b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs.meta
new file mode 100644
index 000000000..c3aad6370
--- /dev/null
+++ b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BargraphController.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 7aa4ce0f82cc57145a4ca433e2a551c9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BitsBehaviourController.cs b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BitsBehaviourController.cs
index 50a05c53c..aef448b10 100644
--- a/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BitsBehaviourController.cs
+++ b/Assets/MirageXR/Player/Prefabs/eROBSON/Scripts/BitsBehaviourController.cs
@@ -366,6 +366,7 @@ private async void BitActionToggle(eROBSONItems bit, bool status)
                 await ControlBuzzerSound(bit, status, averageValue);
                 break;
             case BitID.O9BARGRAPH:
+                await ControlBarGraph(bit, status, averageValue);
                 break;
             case BitID.O13FAN:
             case BitID.O25DCMOTOR:
@@ -386,6 +387,13 @@ private async void BitActionToggle(eROBSONItems bit, bool status)
 
 
 
+    /// <summary>
+    /// Turn on/off the led light
+    /// </summary>
+    /// <param name="bit"></param>
+    /// <param name="status"></param>
+    /// <param name="averageValue"></param>
+    /// <returns></returns>
     private async Task ControlLedLight(eROBSONItems bit, bool status, float averageValue)
     {
         var light = bit.GetComponentInChildren<Light>();
@@ -410,6 +418,13 @@ private async Task ControlLedLight(eROBSONItems bit, bool status, float averageV
 
 
 
+    /// <summary>
+    /// control the buzzer and play the buzz sound regarding to the power
+    /// </summary>
+    /// <param name="bit"></param>
+    /// <param name="status"></param>
+    /// <param name="averageValue"></param>
+    /// <returns></returns>
     private async Task ControlBuzzerSound(eROBSONItems bit, bool status, float averageValue)
     {
         var audios = bit.GetComponentsInChildren<AudioSource>();
@@ -434,6 +449,26 @@ private async Task ControlBuzzerSound(eROBSONItems bit, bool status, float avera
 
 
 
+    /// <summary>
+    /// Control the bargraph and turn on/off the lights
+    /// </summary>
+    /// <param name="bit"></param>
+    /// <param name="averageValue"></param>
+    /// <returns></returns>
+    private async Task ControlBarGraph(eROBSONItems bit, bool status, float averageValue)
+    {
+        bit.TryGetComponent<BargraphController>(out var bargraphController);
+        if (!bargraphController)
+        {
+            return;
+        }
+
+        var power = averageValue / 2; //normalized
+        bargraphController.TurnOnLights(status, power);
+
+        await Task.CompletedTask;
+    }
+