
Siemens 3RK1904-2AB02 Addressing units. Siemens 3RK1904-2AB02 is the exact printed commercial reference for a modular safety system accessory in the SIRIUS 3RK Safety Systems range. Siemens' official product description is: AS-Interface Addressing unit V3.0 for setting the addresses of AS-i slave modules Input/output test and further functions AS-i specification V3.0 M12 connection socket with addressing cable 1.5 m (M12 connector/hollow plug) with batteries (4 x 1.5 V LR6).
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