Davey Spa-Quip 5 Variable Colour LED Slave Light.
This light is sold individually - The light housing is sold separately part number QRD5LH.
This light is capable of working with the SP400, SP600, SP601 and Xcelsior as a single variable colour light.
It can also work with the SP800 and SP1200 with up to 60 daisy chain light outputs.