The Siemens 3SF7844-8TB08-1SS1 is a Type 4 host receiver in the SIMATIC FS420I safety light curtain family. It provides a 14 mm detection resolution over a 600 mm protected height, with a sensing range of 0 to 6 m. The unit communicates via PROFIsafe bus connection, making it a direct fit for Siemens safety controllers that speak PROFIsafe. The 14 mm resolution means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496-1 — so it's suited for guarding access points where hand or finger entry is possible.
Siemens 3SF7844-8TB08-1SS1 Light Curtain Type 4 Host Receive
MPN3SF7844-8TB08-1SS1
Siemens SIMATIC FS420I, Type 4 safety light curtain host receiver, 14 mm resolution, 600 mm protected height, 0 to 6 m range, PROFIsafe bus connection.
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MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
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Frequently asked questions
How do I get pricing and availability for 3SF7844-8TB08-1SS1?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is listed here.
What is the 3SF7844-8TB08-1SS1 used for?
It is a Type 4 host receiver for a safety light curtain with 14 mm resolution, 600 mm protected height, and 0 to 6 m range, communicating via PROFIsafe. It guards hazard zones where finger or hand entry must be detected.
MPN
3SF7844-8TB08-1SS1