When we are home and then open a door and the system is still in Home Mode, no alarm sounds, no beeping on keypad sounds. We assume we need to turn the system off and use our code. Then we use Away Mode and reenter the code to set it as we leave. We asked Customer Support the question, "If someone comes in when it's in Home Mode and no alarm or beep sounds, how are we to know someone has come in?" The answer was confusing. Is it working or is it not?