diff --git a/src/pPowerManger/httpserver/dashboard.h b/src/pPowerManger/httpserver/dashboard.h
index ee21935..387167c 100644
--- a/src/pPowerManger/httpserver/dashboard.h
+++ b/src/pPowerManger/httpserver/dashboard.h
@@ -456,10 +456,25 @@ const std::string DASHBOARD_HTML = R"row(
 </div>
 
 <script>
+// 全局存储所有设备的计时器状态
+const deviceTimers = {};
+
 function sendCommand(type, id, action, value) {
   const statusEl = document.getElementById(`${type}-${id}-status-message`);
   const timerEl = document.getElementById(`${type}-${id}-timer`);
-  let timer = null; // 将timer变量提升到函数作用域
+  const buttons = document.querySelectorAll(`button[onclick*="sendCommand('${type}', '${id}'"]`);
+  
+  // 检查是否已有计时器运行
+  if (deviceTimers[`${type}-${id}`]) {
+    return;
+  }
+  
+  // 禁用按钮
+  buttons.forEach(btn => {
+    btn.disabled = true;
+    btn.style.opacity = '0.6';
+    btn.style.cursor = 'not-allowed';
+  });
   
   // 显示操作中状态
   if (statusEl) {
@@ -491,6 +506,9 @@ function sendCommand(type, id, action, value) {
     setTimeout(() => reject(new Error('请求超时')), 10000)
   );
 
+  // 存储计时器
+  deviceTimers[`${type}-${id}`] = timer;
+
   Promise.race([
     fetch('/control', {
       method: 'POST',
@@ -502,10 +520,21 @@ function sendCommand(type, id, action, value) {
     .then(res => {
       // 立即清除计时器
       const timerEl = document.getElementById(`${type}-${id}-timer`);
+      const buttons = document.querySelectorAll(`button[onclick*="sendCommand('${type}', '${id}'"]`);
+      
       if (timerEl) {
-        clearInterval(timer);
+        clearInterval(deviceTimers[`${type}-${id}`]);
+        delete deviceTimers[`${type}-${id}`];
         timerEl.textContent = '';
       }
+      
+      // 恢复按钮状态
+      buttons.forEach(btn => {
+        btn.disabled = false;
+        btn.style.opacity = '1';
+        btn.style.cursor = 'pointer';
+      });
+      
       return res.json();
     })
     .then(data => {
@@ -519,12 +548,21 @@ function sendCommand(type, id, action, value) {
   .catch(error => {
     const statusEl = document.getElementById(`${type}-${id}-status-message`);
     const timerEl = document.getElementById(`${type}-${id}-timer`);
+    const buttons = document.querySelectorAll(`button[onclick*="sendCommand('${type}', '${id}'"]`);
     
     if (timerEl) {
-      clearInterval(timer);
+      clearInterval(deviceTimers[`${type}-${id}`]);
+      delete deviceTimers[`${type}-${id}`];
       timerEl.textContent = '';
     }
     
+    // 恢复按钮状态
+    buttons.forEach(btn => {
+      btn.disabled = false;
+      btn.style.opacity = '1';
+      btn.style.cursor = 'pointer';
+    });
+    
     if (statusEl) {
       if (error.message === '请求超时') {
         statusEl.textContent = '操作超时: 未收到设备反馈';