Circuitron 800-5202 DT-2 Grade Crossing Detection Unit N UniTrack you need mailboxes for the

you need mailboxes for the residents' mail

roof vents

1 Case of Soda Bottles

Includes CF-1 circuit board

Circuitron 800-5202 DT-2 Grade Crossing Detection Unit N UniTrack you need mailboxes for theCircuitron 800 5202 DT 2 Grade Crossing Detection Unit Specifically deigned for use at grade crossings, using Opto Sensors to detect the train. Output controls flasher, gates, bells, etc. Full logic system duplicates prototype grade crossing action. Does not require sensor stay covered to activate. Integrated memory keeps output "on" until last car clears the crossing. Activates whenever a train approaches from either direction, If trains stop short