The IDEC RU4S-C-D110 is a 4PDT plug-in relay designed for versatility and environmental consideration. It features a non-polarized LED indicator, mechanical flag indicator, and snap-on yellow marking plate for easy identification. The relay's lead-free construction and cadmium-free contacts ensure eco-friendly operation. Additionally, it is UL Recognized, CSA Certified, and EN Compliant, meeting rigorous safety and quality standards.