One can already transport firearms on commercial
airliners, provided that they are checked luggage,
disassembled, and unarmed. I think if you're concerned about
taking a buzzer system on an airplane, make it checked
luggage and explain to the counter exactly what it
is.
I suspect that carry-on luggage will be extremely
limited in the coming days, anyway, so if you trust a
buzzer system to the luggage handlers, there shouldn't
be a problem.
-- eps