The se@vis IO 4DI is a compact and reliable digital input module designed for expanding industrial and building automation systems. It provides four digital inputs for monitoring signals from switches, sensors, or other potential-free contacts. Each input channel is equipped with a dedicated status LED, allowing for quick and easy visual diagnostics of the input state directly on the device. Housed in a standard DIN rail-mountable enclosure, the IO 4DI module ensures seamless integration into existing control cabinets. Its screw-type terminals provide secure and straightforward wiring, making it an ideal solution for robust data acquisition in any se@vis control environment.