The switch is used for controlling navigation light and anchor light. It has 3 positions and will maintain its pressed position. The navigation light is on when you press the switch up; The anchor light is on when you press the switch down. The middle position is OFF. Rated at 20amp/12v DC and 10amp/24v DC; Required mounting hole size: 37.2 mm x 21.2 mm(1.46'' x 0.83''); Face Surface Size: 49mm x 25mm(1.91'' x 0.98''). Cool dual built-in red led bulbs can easily penetrate laser-etched switch cover, pattern not easy to fade, have a great night readability. Suitable for all 12 / 24v car battery installation, such as cars , motorcycles , buses, boats , RVs , trailers, etc The package included : 1 X 7 pin rocker switch, 1 X jumper wires set, 1 X wiring diagram.