Sensor wires are colour coded, blue for left, red for right, and black for references. In addition, each sensor individually labeled with the channel name it is connected to the EPOC Flex. The aim of this colour coding is to simplify troubleshooting, because you can quickly identify channel name in the software and quickly find the electrode on the cap. For example if contact quality is low on channel LA this corresponds with the blue A wire. The sensor wires are provided in two lengths to help to minimise the excess while allowing for any configuration, wires for channels A-G are 300mm and channel J-Q are 150mm.