The RU4S-D110 is a 4PDT universal miniature relay designed for DC switching applications with a 110V DC coil and integrated diode surge suppression. This relay features a maximum contact rating of 6A at 250V AC (resistive) or 30V DC (resistive), with reduced inductive load ratings of 0.8A at 250V AC and 1.5A at 30V DC. The relay includes a manual latching lever with color coding for DC operation, a non-polarized green LED indicator, and a mechanical flag indicator for visual contact position confirmation through five small windows. It is constructed with lead-free, cadmium-free silver-gold clad contacts and operates with a coil current of 8.9 mA at 20°C and a coil resistance of 12,100 O. The relay is UL Recognized, CSA Certified, and EN61810-1 compliant, making it suitable for industrial control, automation, and switching applications where reliable DC switching and visual feedback are required.