LT-2561-644-012 is a double-pole illuminated toggle switch featuring an On-Off-On circuit configuration with a 12-volt incandescent lamp and .250 tab quick-connect termination. The switch incorporates neoprene bushing seals for dust and moisture protection, and supports a three-color lighting sequence capability from a single lamp. It is rated for 10A at 250VAC, 15A at 125VAC, 3/4 HP at 125-250VAC, and 15A at 12-28VDC, with a dielectric strength of 1000V between live and dead metal parts. The switch maintains an electrical life of 50,000 cycles and operates reliably over a temperature range of 0°C to 85°C (32°F to 185°F). These specifications make it well-suited for marine and transportation applications where reliable switching and visual indication are essential.