DZ-1090-40U-2 Signal Bridge | O gauge

Sensors built-in to detect train passing under bridge (with 8 sec. aspect delay)
Sensors are on 4-1/2" track centers. For a special order they can be on 6" centers for Fastrack.
Each track also has an input for external control
Delay between aspects is 2 sec. or 8 sec. You can set it to be any delay from 1 to 60 sec.between stop / caution and caution / clear or go
Strong ABS plastic construction with stainless steel ladder
Fully assembled and tested
As always: just set it & connect two wires - your done!
Can be upgraded for up to 8 tracks with signal heads on either or both sides.