This DPDT Switch Car Auto Boat Rocker Toggle Switch. Widely used for various kinds of electrical products, instrument, car, boat, household appliances such as lights, water dispenser, treadmill, coffee pot, speaker, electric car, motorcycle, TV, massage machine etc. Power tools: Many power tools, such as drills, saws, and routers, incorporate DPDT on-off switches as a safety feature. These switches often have a lock-on feature that keeps the tool running without continuously pressing the switch, allowing for continuous operation.