My aunt is in need of a device that she can keep with her at all times, if/when she has a seizure she needs to be able to push a button and have a flashing light activate in another room in order to notify her deaf son that she is in need of some assistance.
The devices like this that I have found all send signals outside the home in order to get help. That is not what we are after. I am told that they make doorbells for deaf people that activate a flashing light. Something like that coupled to a small remote seems like a good solution.
I would prefer a commercial solution, if one exists. If not then I would appreciate advice on a high quality, very reliable and robust remote that can be used in conjunction with the flashing light doorbell.