SIMATIC ET 200SP, Signal relay module, RQ CO 4x 24V DC/2A ST, 4 changeover contacts, isolated contacts, packing unit: 1 piece, fits to BU-type A0, Colour Code CC00, substitute value output, module diagnostics for: supply voltage

4RO, 24VDC/2A, CO, standard model, suitable for A0 base unit (6ES71326GD500BB1 upgrade)