Currently the rings will activate and then immediately activate again when sent a signal. I managed to get around this by pairing it with a clock so that the Go To signal is only passed for 10 ticks every 60, but it'd be nice if there was a slight delay so it wasn't necessary. (Especially given it's not the most reliable workaround - often it'll take several cycles to actually transport)

Currently the teleporter checks every 30th tick if signal is given.
If it is not occupied it will set itself occupied and schedule a teleport in next 0 to 300 ticks (due to how animations work).
Hopefully this can help with setting up circuits.

I will see how to adjust the logic for easier use.