1 set grade crossing signal + automatic controller by train detector auto flash

1 set Auto Control system by IR sensorswith flasher board and signalsDrive by 6V to 24V AC/DC transformer ( Not Include ), or optional 3V DC input.when trains trigger the IR sensor, the crossing signals begin to flash, after the set delay time, stop flash. Delay time can be 3, 5, 6, 7, 10, 12, 17 or 20 seconds, the delay time is fixed once set, no matter how long a train is, it will run same delay time. suitable for layouts with trains at similar length.Specifications:Brand: WeHonest Model.Reference Scale: Suitable all scale layouts.Operating Voltage: 6V to 24V AV/DC.boards mounted on a ABS plat board and are prewired, ready to use upon arrivaldefault signals: will come with 2...