diff --git a/src/Models/AutoDiscovery.cs b/src/Models/AutoDiscovery.cs
index f9fa393b..02725c24 100644
--- a/src/Models/AutoDiscovery.cs
+++ b/src/Models/AutoDiscovery.cs
@@ -3,47 +3,45 @@
 using Newtonsoft.Json;
 using TextExtensions;
 
-namespace ESPresense.Models
+namespace ESPresense.Models;
+
+public class AutoDiscovery(Device dev, string name, string component, string sourceType = null)
 {
-    public class AutoDiscovery
-    {
-        private readonly Device _dev;
-        private readonly string _component;
+    private bool _sent;
 
-        public AutoDiscovery(Device dev, string component)
-        {
-            _dev = dev;
-            _component = component;
-        }
+    [JsonProperty("name")]
+    private string Name => name;
 
-        [JsonProperty("name")]
-        string Name => _dev.Name ?? _dev.Id;
+    [JsonProperty("unique_id")]
+    private string UniqueId => $"espresense-companion-{dev.Id}";
 
-        [JsonProperty("unique_id")]
-        string UniqueId => $"espresense-companion-{_dev.Id}";
+    [JsonProperty("state_topic")]
+    private string StateTopic => $"espresense/companion/{dev.Id}";
 
-        [JsonProperty("state_topic")]
-        string StateTopic => $"espresense/companion/{_dev.Id}";
+    [JsonProperty("json_attributes_topic")]
+    private string JsonAttributesTopic => $"espresense/companion/{dev.Id}/attributes";
 
-        [JsonProperty("json_attributes_topic")]
-        string JsonAttributesTopic => $"espresense/companion/{_dev.Id}/attributes";
+    [JsonProperty("status_topic")]
+    private string EntityStatusTopic => "espresense/companion/status";
 
-        [JsonProperty("status_topic")]
-        string EntityStatusTopic => "espresense/companion/status";
+    [JsonProperty("device")]
+    private DeviceRecord Device => new(dev.Name ?? dev.Id, "ESPresense", "Companion", "0.0.0", new[] { $"espresense-{dev.Id}" });
 
-        [JsonProperty("device")]
-        private DeviceRecord Device => new DeviceRecord(_dev.Name, "ESPresense", "Companion", "0.0.0", new[] { $"espresense-{_dev.Id}" });
+    [JsonProperty("origin")]
+    private OriginRecord Origin => new("ESPresense Companion");
 
-        bool _sent;
+    [JsonProperty("source_type")]
+    private string SourceType => sourceType;
 
-        public async Task Send(MqttCoordinator mc)
-        {
-            if (_sent) return;
-            _sent = true;
+    public async Task Send(MqttCoordinator mc)
+    {
+        if (_sent) return;
+        _sent = true;
 
-            await mc.EnqueueAsync($"homeassistant/{_component}/{_dev.Id.ToSnakeCase()}/config", JsonConvert.SerializeObject(this, SerializerSettings.NullIgnore), retain: true);
-        }
+        await mc.EnqueueAsync($"homeassistant/{component}/{dev.Id.ToSnakeCase()}/config", JsonConvert.SerializeObject(this, SerializerSettings.NullIgnore), true);
     }
-
-    public record DeviceRecord(string? name, string manufacturer, string model, string sw_version, string[] identifiers);
 }
+
+public record DeviceRecord(string? name, string manufacturer, string model, string sw_version, string[] identifiers);
+
+public record OriginRecord(string? name);
\ No newline at end of file
diff --git a/src/Models/Device.cs b/src/Models/Device.cs
index bb95aa02..a92baa4e 100644
--- a/src/Models/Device.cs
+++ b/src/Models/Device.cs
@@ -11,7 +11,7 @@ public Device(string id, TimeSpan timeout)
     {
         Id = id;
         Timeout = timeout;
-        HassAutoDiscovery.Add(new AutoDiscovery(this, "device_tracker"));
+        HassAutoDiscovery.Add(new AutoDiscovery(this, "", "device_tracker", "bluetooth"));
     }
 
     public override string ToString()