BRAND : Siemens
SIMATIC S7/PCS 7 SM 321 digital input, 16 DI; 24/125 V DC, 1 x 40-pole, interface with wire break diagnostics, hardware interrupt diagnostics
SIMATIC S7/PCS 7 SM 321 digital input, 16 DI; 24/125 V DC, 1 x 40-pole, interface with wire break diagnostics, hardware interrupt diagnostics