SIEMENS 6DD1681-0EB3 Description Description SIEMENS SIMATIC TDC, BINARY INPUT MODULE SB61 GALVANIC ISOLATION24/48V , 8BI 24 OR 48 V DC, LED-DISPLAY Related products SIEMENS 1FN3150-4SA00-0AA0 SIEMENS 1FT5066-1AF71-4AA0 SIEMENS 1FK7063-5AF71-1FG2 SIEMENS 1FN1910-0AA20-3AA0 SIEMENS 1FK7083-5AF71-1EB3 SIEMENS 1FK7022-5AK71-1AG0