Heat management accessories are components that prevent heat from accumulating on circuit boards used for control devices and electrical devices. Depending on the types of materials used for circuit boards of devices, there is a possibility that various types of troubles may occur, such as the accumulation of heat, breakage of elements, and deterioration of solder. In order to prevent this, it is necessary to use a heat pad or a sheet as a measure for heat dissipation. Heat management accessories include thermal pad seats and filter guards for fans. Heat conductive sheets are available in with and without adhesive. Use silicone grease to close a gap. A fan installed directly can be safely used by using a finger guard or a metal EMC screen filter.