I am looking for something to work in a laptop. I have a 2 wire pair
circuit that runs at 1200 Baud. It goes from a traffic master to its 10-20
traffic lights. I 'd like to clip on to it either through a D9 or a sound
card. it's audio you can hear it in a phone. I'd like to see the leave or
activity,a reference point, sound wave. Any Ideas software ect.

Part 2
The master talk to each intersection and back Can I see this in XXXX & OOOO.
Can I read each addressable intersection?

820A Mutlisonics Traffic equipment

Rich