The Siemens SIMATIC ET 200SP is a relay module, RQ NO 4x 120V DC 230VAC/5A ST. 4 normally open contacts, isolated contacts, packing unit: 1 piece, fits to BU-type B0 and B1, Colour Code CC40, substitute value output, module diagnostics for supply voltage. Rated value (AC) 230 V
Isolation tested with 2 500 V DC