I’m interested in developing a signal light system where I can be in one room, and by using a small remote transmitter, turn on a small LED signal that is located in another room no further than 30 feet away.
I’m working in a doctors office and would like to use this system as a signal to the staff that I need assistance without picking up the phone, leaving the room, or letting the patient know that I am asking for help. It work best if each of the 3 doctors could use a separte remote to turn on a different color LED at any of the four or five adjacent rooms. The smaller the better.
Any ideas?
Thanks for the input.