The disclosure illustrates an industrial input/output device with series connectors. The industrial input/output device includes a circuit board, a male connector and a female connector respectively electrically connected to both sides of the circuit board, and pin guides configured to guide electrical connection pins of the male connector of another industrial input/output device to slide, so that the male connector of the another industrial input/output device can be electrically connected to the female connector of the industrial input/output device, and the technical effect of providing electrical connection timing control for series connection between the male connector and the female connector can be achieved.