If you put in a T series phone, they have a red LED on them that will flash, but that might not grab your attention if you're not right next to it. I've had to install a strobe in a bank for a deaf employee. I used a M7100, and a third party strobe (MiketheSandman,I think), but as endlesswinter was saying, there's no reason you couldnt tap the speaker inside the set on a different model.