25732485The single-sided starting light for parallel races is controlled by the SSD1-PS. First, one red light appears, then every second another one follows until in the end the green light signals the start.
connection from SSD1-PS to SSD1 and SSD1-PS to start light (D-SL85-5xR-G and D-SL85-5xR-G-DS) The cables can easily be extended by plugging together.