diff --git a/src/main/load-serialport.js b/src/main/load-serialport.js
index fdf3922..5d9cb6c 100644
--- a/src/main/load-serialport.js
+++ b/src/main/load-serialport.js
@@ -13,13 +13,27 @@ const getSerialPortConstructorArguments = (ports) => {
   return { path, baudRate }
 }
 
-let sender = null
+const senders = []
 ipcMain.on("APP_MOUNTED", (event) => {
-  sender = event.sender
+  const { sender } = event
+  senders.push(sender)
+
+  sender.once('destroyed', () => {
+    const index = senders.indexOf(sender)
+    if (index >= 0) senders.splice(index, 1)
+  })
 })
 
 const sendMsg = (channel, msg) => {
-  if (sender) sender.send(channel, msg)
+  if (senders.length <= 0) return
+  
+  try {
+    senders.forEach((sender) => {
+      sender.send(channel, msg)
+    })
+  } catch (error) {
+    console.error(error)
+  }
 }
 
 SerialPort.list().then((ports, err) => {