Siemens 6AF7021-0AA Description Description Siemens DE21 Digital input 24V DC, 16 inputs Related products SIEMENS 1FK6032-6AK71-1TA0 SIEMENS 1FK7022-5AK71-1DA0 SIEMENS 1FT5066-0AC01-2-Z SIEMENS 1FN3050-4SA00-0AA0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FK7060-5AF71-1FH3
