This addON expansion card for IoT systems provides 4 open collector outputs, offering versatile functionality for various industrial and IoT applications. The digital outputs support a maximum load of 400 mW at 25 VDC and 350 mA, enabling reliable control of external devices such as relays or digital inputs. Designed as an addON module, this card seamlessly extends the capabilities of IoT cards, providing scalable options for monitoring and control in complex environments. Its adaptable input and output configurations make it an ideal choice for developers and engineers seeking customizable and efficient digital I/O solutions. Additionally, it is fitted with a screwless connector that enables quick and secure wire connections, simplifying installation and maintenance.