These vintage Tri-ang transformer speed controller power unit bundle job lot X2 is a great addition to any collection of model railways and trains. The unit operates on AC power and is compatible with analogue control systems, including Selectrix. The Tri-ang brand is well-known for producing high-quality model railway equipment, and this control unit is no exception.

There are  two speed controllers which I have no way of testing but equally have no reason to think that they wouldn't work. The gauge is OO, making it suitable for a range of models. This item is ideal for collectors looking for authentic vintage pieces or for those who want to add a touch of nostalgia to their model railway set-up.