Fig. 2: An EVA encased mouthguard situated on top of the cast with a data acquisition system embedded.
From: Determining the performance of a temperature sensor embedded into a mouthguard

A cable is used to connect it with the MAX30208 Evaluation System. Red electric tape is used to keep the wires in place during the forming process, while a yellow pH sensitive comparator paper strip is positioned along the wires to detect potential water ingression.