diff --git a/app/build.gradle b/app/build.gradle
index a60488a..5898196 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,7 +7,7 @@ android {
         minSdkVersion 19
         targetSdkVersion 28
         versionCode 20
-        versionName "v0.11.5"
+        versionName "v0.11.6"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
diff --git a/app/release/app-release.apk b/app/release/app-release.apk
index 7a1342b..4ea6090 100644
Binary files a/app/release/app-release.apk and b/app/release/app-release.apk differ
diff --git a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1Fragment.java b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1Fragment.java
index 8779f6f..5ad93e9 100644
--- a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1Fragment.java
+++ b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1Fragment.java
@@ -267,8 +267,15 @@ public void onClick(View v) {
 
     void Send(String message) {
         if (mConnectService == null) return;
-        boolean b = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
-        mConnectService.Send(b ? null : "device/ztc1/" + device_mac + "/set", message);
+        boolean udp = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
+        boolean oldProtocol = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("old_protocol", false);
+
+        String topic = null;
+        if (!udp) {
+            if (oldProtocol) topic = "device/ztc1/set";
+            else topic = "device/ztc1/" + device_mac + "/set";
+        }
+        mConnectService.Send(topic, message);
     }
 
     //数据接收处理函数
diff --git a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1PlugActivity.java b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1PlugActivity.java
index 4937f4d..be8fbb5 100644
--- a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1PlugActivity.java
+++ b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1PlugActivity.java
@@ -449,8 +449,16 @@ public void onClick(View v) {
 
     //region 数据接收发送处理函数
     void Send(String message) {
-        boolean b = getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
-        mConnectService.Send(b ? null : "device/ztc1/" + device_mac + "/set", message);
+        if (mConnectService == null) return;
+        boolean udp = getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
+        boolean oldProtocol = getSharedPreferences("Setting_" + device_mac, 0).getBoolean("old_protocol", false);
+
+        String topic = null;
+        if (!udp) {
+            if (oldProtocol) topic = "device/ztc1/set";
+            else topic = "device/ztc1/" + device_mac + "/set";
+        }
+        mConnectService.Send(topic, message);
     }
 
     void Receive(String ip, int port, String message) {
diff --git a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1SettingFragment.java b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1SettingFragment.java
index f4269cb..a841b70 100644
--- a/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1SettingFragment.java
+++ b/app/src/main/java/com/zyc/zcontrol/controlItem/tc1/TC1SettingFragment.java
@@ -429,8 +429,16 @@ public void onClick(DialogInterface dialogInterface, int i) {
     //endregion
 
     void Send(String message) {
-        boolean b = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
-        mConnectService.Send(b ? null : "device/ztc1/" + device_mac + "/set", message);
+        if (mConnectService == null) return;
+        boolean udp = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("always_UDP", false);
+        boolean oldProtocol = getActivity().getSharedPreferences("Setting_" + device_mac, 0).getBoolean("old_protocol", false);
+
+        String topic = null;
+        if (!udp) {
+            if (oldProtocol) topic = "device/ztc1/set";
+            else topic = "device/ztc1/" + device_mac + "/set";
+        }
+        mConnectService.Send(topic, message);
     }
 
     //数据接收处理函数
diff --git a/app/src/main/res/xml/tc1_setting.xml b/app/src/main/res/xml/tc1_setting.xml
index b3bcf5d..d3afd7e 100644
--- a/app/src/main/res/xml/tc1_setting.xml
+++ b/app/src/main/res/xml/tc1_setting.xml
@@ -38,6 +38,13 @@
             android:title="重新获取数据"
             android:summary="获取版本/激活状态失败时点此重试"/>
 
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:disableDependentsState="true"
+            android:key="old_protocol"
+            android:summary="固件版本1.0.0以下时,请勾选此项"
+            android:title="使用旧版通信协议" />
+
     </PreferenceCategory>
 
 </PreferenceScreen>