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 1FK6042-6AF71-1TB0 SIEMENS 1FN1910-0AA20-1AA0 SIEMENS 1FK7042-5AF71-1EA0 SIEMENS 1FK7103-5AF71-1DH0 SIEMENS 1FK6060-6AF71-1TG0