Great system, does everything you need for a layout. I've had no issues whatsoever. Only limiting factor I have is it only goes up to F20 and some sound fitted DCC have sounds going up to 29.
The F0 (lights) is actually a button with a bulb on it that confused me for a minute.
Bargain if you can get for under £100. RRP (£295) is very over priced imo.