This range of low cost, self assembly signal kits result in true to life OO scaled signals modelled on real signals in North Norfolk.
To make wiring easy the LEDs are presoldered onto PCB 'sticks' which just pass through a 5mm or larger hole made in the baseboard and your wires can then be soldered on.
The signals can either be wired to conventional switches and supplied by 12-15 volts DC or a 9V battery (resistors supplied) or controlled by DCC via a DCC signal controller / decoder like the Train-Tech TTSC1, or the TTSC2. Alternativly they can be connected to the TTSC100 to allow them to become part of your Sensor Signal system.
Please note that these signals are wired common negative