This is a 3 camera auto darts setup for the Target Corona Light Ring. These products arrive pre-assembled and simply click on to your Target Corona Light ring. Once assembled, calibration will take place on the auto darts website and you’re free to play against players online! These brackets are 3D printed and the cameras are then installed. USB 4 in 1 Dock included in this sale. The cable lengths are 2 metres from each camera. A laptop or PC is required for this auto darts set up to work. Light ring not supplied with this sale.