Update 'client/index.js'

client/index.js

@@ -35,7 +35,7 @@ setInterval(() => {
         timeFlag = new Date();
         socket.emit('data', data);
     }
-}, 2 * 1000); // Every 30s
+}, 30 * 1000); // Every 30s
 
 // Return a test temp from 1-50
 getTemp = () => {