Hi. I had a Texecom Premier Elite 64 W alarm system installed a few years ago. It has a external Odyssey 3W sounder however when the external siren goes off I don't hear anything inside the house. Should the alarm panel be sounding as well or do I need to add an internal sounder as well such as the Texecom Elite 5CI-W internal sounder.
Thanks in advance.
Thanks in advance.

