The Banner Engineering SI-LS42DMH is a locking‑style safety interlock switch that uses a 24 V ac/dc solenoid to secure guard doors in industrial environments. It provides two safety contacts (2 NC) and a monitored 1 NC/1 NO contact pair, with an IP67 thermoplastic housing and a Power Lock mechanism designed to resist tampering. Measuring 170 × 43 × 45 mm and operable from -25 to 70 °C, this interlock supports CAT 4 safety performance with PL e and SIL CL 3, making it suitable for machine guarding on doors, gates, enclosures, and conveyors in safety‑critical guarding applications.
