Upgrade your bilge pump control with this Joinfworld 3 Way Rocker Switch! It's a 20A switch with three positions: Auto, Off, and Manual – giving you full control over your pump. Designed with 4 pins in an SPDT setup, it works with 12V or 24V systems and has a waterproof board to handle marine conditions. The switch features a blue LED light indicator, so you can easily see the mode even at night. The mounting hole size is 1.46 inches by 0.83 inches (37.2mm x 21.2mm), fitting most dashboards or panels in boats, cars, RVs, trucks, etc. Made from strengthened ABS and flame-retardant materials, it's durable, shockproof, and built to last. The package includes one switch and four insulated wire connectors for easy installation. Use it for bilge pumps with automatic float switches, or for other accessories in vehicles, marine boats, yachts, ATVs, campers, or special equipment. It's a reliable, user-friendly switch that makes managing your pump simple. Get better control and peace of mind on the water or road!