SIMATIC S7-400, digital output SM 422, isolated 16 DO; 120/230 V AC, 2 A
SIMATIC S7-400, digital output SM 422, isolated 16 DO; 5..230 V AC, 5 A relay
SIMATIC S7-400, digital output SM 422, isolated 32 DO; 24 V DC, 0.5 A with...
SIMATIC S7-400, digital output SM 422, isolated 32 DO; 24 V DC, 0.5 A
SIMATIC S7-400, digital output SM 422, isolated 16 DO; 24 V DC, 2 A