The Siemens 3RS7003-1DE00 is a signal separator/amplifier converter designed to separate and amplify electrical signals. It is a DIN-rail mounted device with a 4-20mA current output and 24 VDC and 24 VAC power inputs. It is capable of separating two signals with different source levels and amplifying each signal individually. It is suitable for various measuring and automation applications in areas such as the energy, water, and industrial sectors.