The IDEC RU4S-R-A220 is a 4PDT RC Suppression Relay designed for universal applications with environmental considerations. 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. It meets industry standards with UL Recognition, CSA Certification, and EN Compliance, making it suitable for a wide range of uses.