Siemens 6ES7222-5HH50-0XB0 Digital Output Module. Siemens 6ES7222-5HH50-0XB0 is the exact manufacturer order number for a digital output module in the SIMATIC S7-1200 portfolio. Siemens describes this exact reference as: SIMATIC S7-1200 G2: SM 1222 digital output, 16 relays; outputs: 16x DO, relay 2 A. The verified manufacturer lifecycle record is PM300: Active Product.