SIMATIC S7-400, digital input SM 421, isolated 32 DI; 120 V DC/AC SKU:6ES74211EL000AA0
SIMATIC S7-300, ANALOG INPUT SM 331, OPTICALLY ISOLATED, U/I/THERMOCOUPLE/RESISTANCE INTERRUPT, DIAGNOSTICS; RESOLUTION 9/12/14 BITS, 8AI, REMOVE/INSERT W. BACKPLANE BUS 20 PIN SKU:6ES73317KF010AB0
SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16DI, 24 V DC, 20 PIN SKU:6ES73211BH010AA0
SIMATIC S7-300, Digital input SM 321, Isolated 32 DI, 24 V DC, 1x 40-pole SKU:6ES73211BL000AA0
SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16DI, 24 V DC, 20 PIN SKU:6ES73211BH000AA0
SIMATIC S7-200, ANALOG OUTPUT EM232, NON-ISOLATED 2AQ, +/- 10 V OR 0 - 20 MA 12 BIT RESOLUTION, * PRODUCT TO BE DISCONTINUED * SKU:6ES72320HB000XA0
SIMATIC S7-200, Analog input EM 231, only for S7-22X CPU, 4 AI, 0-10V DC, 12 bit converter SKU:6ES72310HC220XA0
SIMATIC S7-200, Digital I/O EM 223, only for S7-22X CPU, 16 DI 24 V DC, Sink/Source, 16DO 24 V DC; 0.75 A/channel,source SKU:6ES72231BL220XA0
SIMATIC S7-200, Digital input EM 221, only for S7-22X CPU, 8 DI, 24 V DC, sinking-sourcing SKU:6ES72211BF220XA0
SIMATIC S7-200, DIGITAL INPUT EM 221, FOR S7-22X CPU ONLY, 8 DI, 24V DC, SINK/SOURCE INPUT SKU:6ES72211BF210XA0
