Reply to "Questions about Z Stuff's signals"

I have 21 Z Stuff signals on my S gauge layout. The S gauge variant of the signals is just the O gauge heads on shorter poles. Five of the signals are 12 years old, the balance are 4 years old. All signals worked out of the box, none have failed so far. The signals move from stop to caution 4 seconds after the last car passes, then to proceed 3 seconds after that. The signals reads the trucks. As long as the train is moving the signal stays at stop. If the train stops and a truck is not blocking the detector then the signal will cycle to green. They can be daisy chained if desired, I did not do that. I bought mine at a train show from a vendor that specialized in S gauge so he always had some I could take with me.