diff --git a/app.js b/app.js
index 133b06c..2ed92c9 100644
--- a/app.js
+++ b/app.js
@@ -351,5 +351,11 @@ App({
             clearTimeout(timer);
             onResult(res);
         });
+        // 返回取消函数，供组件/页面在销毁时调用，静默取消超时
+        return () => {
+            if (settled) return;
+            settled = true;
+            clearTimeout(timer);
+        };
     },
 })
\ No newline at end of file
diff --git a/components/configureDevice_2/configureDevice_2.js b/components/configureDevice_2/configureDevice_2.js
index 43082f6..1e8c570 100644
--- a/components/configureDevice_2/configureDevice_2.js
+++ b/components/configureDevice_2/configureDevice_2.js
@@ -53,10 +53,10 @@ Component({
             this.fetchUserList();
         },
         detached() {
-            // 4. 在组件销毁时取消监听，防止内存泄漏
             if (this._connectStateWatcher) {
                 app.unwatch('ppScale.device.connectState', this._connectStateWatcher);
             }
+            if (this._sdkCancel) { this._sdkCancel(); this._sdkCancel = null; }
         }
     },
   
@@ -190,7 +190,7 @@ Component({
 
             // 获取设备端已有用户，与用户列表做双向同步
             wx.showLoading({ title: "正在同步用户信息...", mask: true });
-            app.callWithTimeout(
+            this._sdkCancel = app.callWithTimeout(
                 (done) => app.globalData.ppScale.activeProtocol.dataFetchUserID(done),
                 SDK_TIMEOUT,
                 (deviceUserIds) => {
@@ -243,7 +243,7 @@ Component({
                     }
                     wx.showLoading({ title: "正在下发第" + (syncIndex + 1) + "/" + needSyncList.length + "个用户...", mask: true });
                     let user = needSyncList[syncIndex];
-                    app.callWithTimeout(
+                    this._sdkCancel = app.callWithTimeout(
                         (done) => app.globalData.ppScale.activeProtocol.dataSyncUserInfo({
                             userID: user.userId,
                             userName: user.realname,
@@ -290,7 +290,7 @@ Component({
                     }
                     wx.showLoading({ title: "正在删除第" + (delIndex + 1) + "/" + needDeleteList.length + "个多余用户...", mask: true });
                     let item = needDeleteList[delIndex];
-                    app.callWithTimeout(
+                    this._sdkCancel = app.callWithTimeout(
                         (done) => app.globalData.ppScale.activeProtocol.dataDeleteUser({
                             userID: item.userID,
                             memberID: ""
@@ -330,7 +330,7 @@ Component({
          */
         _checkWifiAndNext() {
             wx.showLoading({ title: "正在检测配网状态...", mask: true });
-            app.callWithTimeout(
+            this._sdkCancel = app.callWithTimeout(
                 (done) => app.globalData.ppScale.activeProtocol.codeFetchWifiConfig(done),
                 SDK_TIMEOUT,
                 (res) => {
diff --git a/components/configureDevice_3/configureDevice_3.js b/components/configureDevice_3/configureDevice_3.js
index 817a785..54a0172 100644
--- a/components/configureDevice_3/configureDevice_3.js
+++ b/components/configureDevice_3/configureDevice_3.js
@@ -20,6 +20,7 @@ Component({
         },
         detached() {
             console.log('configureDevice3 detached');
+            if (this._sdkCancel) { this._sdkCancel(); this._sdkCancel = null; }
         }
     },
   
@@ -34,7 +35,7 @@ Component({
                 wx.showToast({ title: '设备未连接，请重试', icon: 'none' });
                 return;
             }
-            app.callWithTimeout(
+            this._sdkCancel = app.callWithTimeout(
                 (done) => activeProtocol.dataFindSurroundDevice(done),
                 SDK_TIMEOUT,
                 (res) => {
@@ -83,7 +84,7 @@ Component({
 
             let version = app.globalData.ppScale.version;
             if (version === 'domain1') {
-                app.callWithTimeout(
+                this._sdkCancel = app.callWithTimeout(
                     (done) => app.globalData.ppScale.activeProtocol.dataConfigNetWork({
                         domain: app.globalData.ppScale.domain1,
                         ssid: this.data.selectWifi.ssid,
@@ -101,7 +102,7 @@ Component({
                 );
             }
             if (version === 'domain2') {
-                app.callWithTimeout(
+                this._sdkCancel = app.callWithTimeout(
                     (done) => app.globalData.ppScale.activeProtocol.dataConfigUserNetWork({
                         domain: app.globalData.ppScale.domain2,
                         ssid: this.data.selectWifi.ssid,
diff --git a/components/replaceNetwork_3/replaceNetwork_3.js b/components/replaceNetwork_3/replaceNetwork_3.js
index 0a1c60c..c57571a 100644
--- a/components/replaceNetwork_3/replaceNetwork_3.js
+++ b/components/replaceNetwork_3/replaceNetwork_3.js
@@ -26,7 +26,7 @@ Component({
             this.setNerwork();
         },
         detached() {
-            
+            if (this._sdkCancel) { this._sdkCancel(); this._sdkCancel = null; }
         }
     },
   
@@ -37,7 +37,7 @@ Component({
             let password = this.properties.password;
             let version = app.globalData.ppScale.version;
             if (version === 'domain1') {
-                app.callWithTimeout(
+                this._sdkCancel = app.callWithTimeout(
                     (done) => app.globalData.ppScale.activeProtocol.dataConfigNetWork({
                         domain: app.globalData.ppScale.domain1,
                         ssid: ssid,
@@ -57,7 +57,7 @@ Component({
                 );
             }
             if (version === 'domain2') {
-                app.callWithTimeout(
+                this._sdkCancel = app.callWithTimeout(
                     (done) => app.globalData.ppScale.activeProtocol.dataConfigUserNetWork({
                         domain: app.globalData.ppScale.domain2,
                         ssid: ssid,