diff --git a/UHFHelper/UHFCardHelper.cs b/UHFHelper/UHFCardHelper.cs
index c1e117d..e062949 100644
--- a/UHFHelper/UHFCardHelper.cs
+++ b/UHFHelper/UHFCardHelper.cs
@@ -139,7 +139,7 @@ namespace UHFHelper
             //输出模式
             int Reader_bit1 = 0;
             //蜂鸣开关
-            int Reader_bit2 = 0;
+            int Reader_bit2 = 1;
             //起始地址
             int Reader_bit3 = 0;
             //是否SYRIS485输出
diff --git a/UHFHelper/UHF_RS485_Helper.cs b/UHFHelper/UHF_RS485_Helper.cs
index 2d2bec3..b00b459 100644
--- a/UHFHelper/UHF_RS485_Helper.cs
+++ b/UHFHelper/UHF_RS485_Helper.cs
@@ -171,7 +171,7 @@ namespace UHFHelper
         /// <param name="timeout">超时时间</param>
         /// <param name="count">串口回复字节数</param>
         /// <returns></returns>
-        public async Task<byte[]> SendMessageAsync(byte[] msg, TimeSpan timeout, int count)
+        public async Task<byte[]?> SendMessageAsync(byte[] msg, TimeSpan timeout, int count)
         {
             var sendTask = Task.Run(() => SendMessage(msg, timeout, count));
             try
@@ -184,6 +184,15 @@ namespace UHFHelper
             }
             return await sendTask;
         }
+
+        /// <summary>
+        /// 发出蜂鸣声音3次,代表扣款成功!
+        /// </summary>
+        public async void OpenBeep()
+        {
+            byte[] sendData = new byte[]{ 0x07, 0x01, 0x33, 0x08, 0x02, 0x03, 0x33,0xB1 };
+            await SendMessageAsync(sendData, TimeSpan.FromSeconds(1), 6);
+        }
     }
 
     public class SerialParam
diff --git a/test/Form1.Designer.cs b/test/Form1.Designer.cs
index c69e3fd..d8361cf 100644
--- a/test/Form1.Designer.cs
+++ b/test/Form1.Designer.cs
@@ -39,6 +39,8 @@
             this.button6 = new System.Windows.Forms.Button();
             this.label2 = new System.Windows.Forms.Label();
             this.textBox4 = new System.Windows.Forms.TextBox();
+            this.button7 = new System.Windows.Forms.Button();
+            this.button8 = new System.Windows.Forms.Button();
             this.SuspendLayout();
             // 
             // button1
@@ -141,11 +143,33 @@
             this.textBox4.Size = new System.Drawing.Size(100, 23);
             this.textBox4.TabIndex = 9;
             // 
+            // button7
+            // 
+            this.button7.Location = new System.Drawing.Point(155, 255);
+            this.button7.Name = "button7";
+            this.button7.Size = new System.Drawing.Size(75, 23);
+            this.button7.TabIndex = 10;
+            this.button7.Text = "button7";
+            this.button7.UseVisualStyleBackColor = true;
+            this.button7.Click += new System.EventHandler(this.button7_Click);
+            // 
+            // button8
+            // 
+            this.button8.Location = new System.Drawing.Point(288, 394);
+            this.button8.Name = "button8";
+            this.button8.Size = new System.Drawing.Size(75, 23);
+            this.button8.TabIndex = 11;
+            this.button8.Text = "button8";
+            this.button8.UseVisualStyleBackColor = true;
+            this.button8.Click += new System.EventHandler(this.button8_Click);
+            // 
             // Form1
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 17F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.button8);
+            this.Controls.Add(this.button7);
             this.Controls.Add(this.textBox4);
             this.Controls.Add(this.label2);
             this.Controls.Add(this.button6);
@@ -178,5 +202,7 @@
         private Button button6;
         private Label label2;
         private TextBox textBox4;
+        private Button button7;
+        private Button button8;
     }
 }
\ No newline at end of file
diff --git a/test/Form1.cs b/test/Form1.cs
index d95eff4..3421a5e 100644
--- a/test/Form1.cs
+++ b/test/Form1.cs
@@ -84,5 +84,15 @@ namespace test
                 label2.Text = sss;
             }
         }
+
+        private void button7_Click(object sender, EventArgs e)
+        {
+            UHFCardHelper.GetInstance().WorkMode();
+        }
+
+        private void button8_Click(object sender, EventArgs e)
+        {
+            UHF_RS485_Helper.GetInstance().OpenBeep();
+        }
     }
 }
\ No newline at end of file