Available. The Leuze MSI-MD-FB is a muting interface designed to control access guarding on conveyor lines by temporarily suppressing safety functions, facilitating material transport through protected areas. It is compatible with standard variants of Leuze's MLC and ELC safety light curtains, as well as MLD multiple light beam safety devices. Key features include multiple muting operating modes—timing-controlled and sequence-controlled muting with 2 or 4 sensors—and functions such as muting-timeout extension and muting enable. The device offers both automatic and manual restart options. It meets stringent safety standards, including SIL 3 according to IEC 61508, SILCL 3 according to IEC/EN 62061, and Performance Level e according to EN ISO 13849-1. The MSI-MD-FB operates with a 24 V DC supply voltage and has a maximum current consumption of 150 mA without external load. It provides two safety-related switching outputs (OSSDs) and three digital switching outputs. The device is housed in a yellow enclosure measuring 60 mm x 38.3 mm x 225 mm and weighs 560 g. It features a 14-LED display and DIP switches for mode selection. Designed for durability, it operates in ambient temperatures ranging from -30°C to 60°C and has an IP 67 protection rating, making it suitable for demanding industrial environments.