diff --git a/Healthbeat.py b/Healthbeat.py
index 5004bca..4969141 100644
--- a/Healthbeat.py
+++ b/Healthbeat.py
@@ -60,15 +60,17 @@ if __name__ == '__main__':
     
     with conn:
         with conn.cursor() as cursor:
-            cursor.execute("SELECT id, status, extends FROM devices WHERE type = 1 AND status in (1, 2) AND supplier_key not in ('device-supplier-biang', 'device-supplier-yunfei') ORDER BY id ASC")
+            cursor.execute("SELECT id, status, extends FROM devices WHERE type = 1 AND status in (1, 2) ORDER BY id ASC")
             rows = cursor.fetchall()
 
             threads = []
             for row in rows:
-                c = Camera(row[0], row[2]["rtsp_url"], row[1])
-                t = threading.Thread(target=c.healthbeat)
-                threads.append(t)
-                t.start()
+                extends = row[2]
+                if isinstance(extends, dict) and extends["rtsp_url"] != '':
+                    c = Camera(row[0], extends["rtsp_url"], row[1])
+                    t = threading.Thread(target=c.healthbeat)
+                    threads.append(t)
+                    t.start()
 
             for t in threads:
                 t.join()