The pattern on the PC board is often gold-plated. IMI tapped into PC board development techniques to minimize manual customization effort. Established lithography techniques can be used to print metamaterial elements on a PC board. The 16-bit processor was contained on a 6-layer PC board. An electrical incompatibility between the motor and Inteli-Touch PC board resulted in several reported fires. Like Inteli-touch, the system included a PC board inside the fan's housing. Like Inteli-Touch and Comfort-Touch, the Advan-Touch system included a PC board inside the fan's housing.