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Price as of: 299,00 EUR, SIEMENS 6ES7 422-7BL00-0AB0 SIEMENS SIMATIC S7-400, DIG.OUTPUT MOD. SM 422, OPTIC. ISOLATED 32 DO, 24V DC, 0.5A WITH 0,15 MS OUTPUT DELAY DIAGNOSTICS ( 6ES74227BL000AB0 6ES7 4227BL000AB0 )