Quote Originally Posted by Jumper View Post
Maybe you have a 3.3V TX module and run it on 5V... if you connect an mA-meter you can see the consumption and check against the datasheet
It is a 12V module, I am using the same for other 12V running applications as well. It is running smooth there.
I just wanted to confirm that using HSEROUT.... is not playing any part is heating up the module, may be data goes differently or something. I am sorry but my knowledge on the subject is limited so I am trying to erase the possibility of this thing.

Have you used such module with the above statements, could there be any connection in between ?