Alarm Strobe for hearing impaired

I have been asking for this for many years since my father is hearing impaired and cannot hear the siren when it is going off and he is 10ft away. This is a life safety issue and should be addressed immediately! What good is an alarm if you don't know it is going off? Thankfully the only alarms we have had are false alarms because he either forgets to turn it off in the morning when letting out the dog or he accidentally sets it to away instead of home and walks out in to the living room. His memory is failing and we have this system to help keep him safe and it simply isn't doing that.