Can you identify the manufacturer of the device in the attached photo.
It was used a visual indicator for hearing impaired in an apartment.

Any other device suggestions are welcome.

E.G. A visual device (normally 24V) to connect to a doorbell (normally 16V).

[img][img]https://i.postimg.cc/RhF1GHZL/hearing-impaired-visual.jpg[/img][/img]