The Easy Level Fuel Sender from Holley quickly reads the depth of fuel remaining in vehicle tanks ranging from 4-39". Installation and sensor programming is easy with on-board buttons, as the desired dampening rate can be adjusted with dip switches on the unit. Additionally, the sensor's speed in responding to fuel level changes is customizable, and all screws and gaskets for installation are included with the unit. However, the sensor does not work with OE-style gauges that utilize an ohm-only input.