that true myself i am hard of hearing and i know how this situation going on with the resdental smoke alarm is.
but i belive they can really improve the techolgy with this example the back up battery they used in the flourscent luminaires are very small and with little design change it will work to run the powerfull strobe light easly.
but only one weak link is some deaf peoples are very sound sleeper they will need a bed viberator to wake them up so sorta like remote sender with reciver to let them know ATM i know someone did make that kind of smoke alarm with this i will post it later ]
Paul,…
I will provide the link to the device what you are describing and for other readers here i am sure you will see one way how the deaf peoples deal with this.