The Siemens 3RK1901-2NR21 is a AS-Interface M12 branch U_ASI and Uaux, 1 m cable with M12 cable socket angled IP67/68/69KIP Degree of protection IP67/68/69K.
The Siemens 3RK1901-2NR11 is a AS-Interface M12 branch U_ASI without Uaux, 1 m cable with M12 cable socket angled IP67/68/69K .IP Degree of protection IP67/68/69K.
The Siemens 3RK1901-2NR12 is a AS-Interface M12 branch U_ASI without Uaux, 2 m cable with M12 cable socket angled IP67/68/69K .IP Degree of protection IP67/68/69K.
The Siemens 3RK1901-2NR22 is a AS-Interface M12 branch U_ASI and Uaux, 2 m cable with M12 cable socket angled IP67/68/69K .IP Degree of protection IP67/68/69K.