diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/DeviceManager.cs b/Windows/CS/Framework4.0/Toprie/Toprie/DeviceManager.cs
index 2f31099..665256b 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/DeviceManager.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/DeviceManager.cs
@@ -190,7 +190,6 @@ namespace JoyD.Windows.CS.Toprie
         private System.Threading.Timer _reconnectTimer;
         // 重连间隔（毫秒）
         private int _reconnectInterval = 2000;
-        private int _connectionCheckInterval = 5000;
         // 重连尝试次数
         private int _reconnectAttempts = 0;
         // 最大重连尝试次数