This product is an isolated SPI/UART to CAN communication module, integrating a microcontroller, CAN transceiver, DC-DC isolated power supply, and signal isolation circuitry. It converts SPI or UART interfaces to a CAN interface, allowing devices without built-in CAN capabilities to connect easily to a CAN bus and achieve stable communication. Featuring dual isolation for both power and signal, this module effectively reduces bus interference and enhances system noise immunity and stability. It is especially suitable for complex or high-interference environments such as industrial automation control systems, home appliances, power monitoring, and smart energy management.