Thanks for the reply PastorJim, The very first one that I had was a "TrailMaster". It was a two piece unit, the camera was an Olympus with an adapter epoxyed in the front that could be used for general pictures as well. The sensing device counted pulses based on your viewing range that you setup. The 35mm film got to expensive though. I did work pretty good though.
Thanks for the website link, On the website did you get the Universal box with the correct cover plate?