Originally posted by Arthur P. Bloom:
It's a universal buzzer (either AC or DC) depending on where you put the wires.
It will work on 10 VAC, just like the more recent round ones with the blue leads.
The screw with the spring is the volume adjustment.
They never were equipped with 105-volt buzzers.
Huh? SE-8A B and X were 10/18/105 VAC buzzers.
I think I have a couple of each lying around.
Carl
