diff --git a/app.js b/app.js
index 6c85a13..abbd305 100644
--- a/app.js
+++ b/app.js
@@ -31,6 +31,7 @@ bleno.on('advertisingStart', function (error) {
 })
 
 localEvent.on('print', async (str) => {
+  console.log(`get printer string >>> \n${str}`)
   let status = false
   if (printer.isOpen) {
     try {
@@ -41,4 +42,8 @@ localEvent.on('print', async (str) => {
   }
 
   localEvent.emit('printResult', status)
+})
+
+process.on('SIGINT', () => {
+  printer.close()
 })
\ No newline at end of file