Vision Black 24V VoltmeterCrisp black dials and matching bezels, along with VDO Tri-optic through dial illumination make Vision Black a solid choice for small fishing and pleasure boats. High contrast clear white graphics and red pointers make Vision Black easy to read, while patented VDO movements provide smooth and accurate performance and long life dependability. Standard " spade connectors simplify wiring and VDO Spin-lok™ mounting makes installation fast and easy. Included light diffusers allow the dial illumination color to be changed to red or :Connection: .250" SpadeInput Type: AnalogMounting Hardware: Spin-Lok™Voltage: 24VDiameter: 2-2/16"Diameter (Metric): 52mmMax Range Outer Scale: 32V