Sound Extender?

Is there a product out there that will extend only the sounds that come from the base station? Especially the countdown to exit/entry? We typically enter through our garage and I'm looking for something I can place out there to provide a reminder that you need to either get out or get in and disarm the system. I thought a dome siren would do that (my bad). I don't need anything expensive and I don't want a keypad in the garage for security reasons.