This is the only ground signal which looks to be in-scale (4mm/ft) available and very easy to assemble.. There are others that look good but in one case assembly is very difficult and the LEDs are projected through a lens which have to be trimmed in length which I found no support for. In contrast the Train-Tech item uses surface mount LEDs which directly radiate light directly through the lamp openings in the body.
Unfortunately, the range does not cater for the shunt signals to be mounted on a signal mast or gantry.