Granatelli has combined the simplicity of a single duty window switch and added a secondary switch to the same unit! The switch can activate a shift light, while controlling 1-stage of nitrous, or it can control 2-stages of nitrous independent of each other. It can be used for many other applications as well, such as water injection or methanol injection. It also works with a magneto, so it can work with a high or low voltage tachometer. If you don't have a tachometer for a connection, don't worry, this switch can be installed to take the reading from a fuel injector wire. Then you could also drive an external tach! Best of all, it also has the ability to read from 0 to 12-volt throttle position sensor (TPS) signals (0 to 5 is standard) or 5 to 0-volt. This simple box is fully programmable from 1,000 to 15,000 rpm.