Siemens SIMATIC FS420I Type 4 safety light curtain receiver, 14 mm resolution, 750 mm protected height, 0 to 6 m range, PROFIsafe bus connection, order code 3SF7844-8TB11-0SS1.
The Siemens 3SF7844-8TB11-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS420I series, with 14 mm resolution and a 750 mm protected height. The 14 mm detection capability meets finger-protection class per IEC 61496-1, meaning it catches fingers reaching into the hazard zone. The operating range spans 0 to 6 m, and it communicates via PROFIsafe bus connection for integration into safety-rated fieldbus networks.
It is a Type 4 safety light curtain receiver used for finger detection (14 mm resolution) in hazardous machine guarding applications, with a 750 mm protected height and a 0 to 6 m range, communicating over PROFIsafe.
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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