Added defect detector prefab.

Assets/Scripts/Machines/AudioAlarm.cs

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+using UnityEngine;
+
+public class AudioAlarm : MonoBehaviour
+{
+    public float Duration;
+    
+    private bool _isPlaying;
+    
+    public void PlayAlarm()
+    {
+        Debug.Log("Playing alarm");
+    }
+}

Assets/Scripts/Machines/AudioAlarm.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: c996d1be4ecb4e8d92bc4344f7f98854
+timeCreated: 1723921340

Assets/Scripts/Machines/StationaryDefectDetector.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+
+public class StationaryDefectDetector : MonoBehaviour
+{
+    public UnityEvent AlarmEvent;
+
+    [Range(0, 100)]
+    public int FalsePositiveChance;
+    [Range(0, 100)]
+    public int FalseNegativeChance;
+    
+    public List<Product> _detectedDefects;
+
+    private void OnTriggerEnter(Collider other)
+    {
+        if (other.TryGetComponent(out Product product))
+        {
+            if (_detectedDefects.Contains(product))
+            {
+                return;
+            }
+
+            _detectedDefects.Add(product);
+
+            if (other.TryGetComponent(out DefectiveProduct defectiveProduct))
+            {
+                var falseNegativeRoll = Random.Range(0, 100);
+                
+                if (falseNegativeRoll > FalseNegativeChance)
+                {
+                    AlarmEvent.Invoke();
+                }
+            }
+            else
+            {
+                var falsePositiveRoll = Random.Range(0, 100);
+            
+                if (falsePositiveRoll < FalsePositiveChance)
+                {
+                    AlarmEvent.Invoke();
+                }
+            }
+        }
+    }
+
+    private void OnTriggerExit(Collider other)
+    {
+        if (other.TryGetComponent(out DefectiveProduct product))
+        {
+            if (_detectedDefects.Contains(product))
+            {
+                _detectedDefects.Remove(product);
+            }
+        }
+    }
+}

Assets/Scripts/Machines/StationaryDefectDetector.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: e00ad13b6427460abe6c3aec6566b6e5
+timeCreated: 1723920624