Siemens 6ES5 421-8MA11 Digital Input

The digital input, also known as digital input module, input module or digital module, with type number 6ES5 421-8MA11 from Siemens is an electrical module for detecting and processing digital signals. It has the dimensions 14 x 10 x 5 cm and weighs 205 kg. Digital inputs detect digital signals from sensors or switches and convert them for further processing in control systems. They are essential in automation technology, mechanical engineering and process control to monitor machine states or user inputs. Typical applications include programmable logic controllers (PLCs) for monitoring limit positions, button presses or binary process states in industrial facilities such as production lines and packaging machines.