R1.188.1050.0 is a safety gate monitoring device (SNT4M63) designed for monitoring safety-related circuits with configurable inputs (N.C./N.O. or N.C./N.C.), synchronous time monitoring, and three enabling current paths. The device operates on AC/DC 24 V at 50–60 Hz and features screw-terminal pluggable connections with detachable clamps. It achieves Category 4 according to EN 954-1 and Performance Level e per EN ISO 13849-1, with SIL 3 rating per IEC 62061, making it suitable for critical safety applications. The device includes feedback circuit and start contact functionality, supports rail mounting, and is compatible with monitoring of magnetic switches, proximity switches, emergency-stop circuits, optoelectronic protection equipment, position switches, and valves. With three safe undelayed contact outputs and 2-channel evaluation inputs, it provides robust safety monitoring for industrial machinery and gate control systems.