Allentare White Voltmeter - 8-16VAllentare marine gauges provide an ideal, cost effective solution for new boats or drop-in replacement gauge for older boats. Allentare gauges are designed to work with most commonly found marine senders and wiring harnesses used today.Features:Input Type: AnalogConnection: M4 StudMounting Hardware: IncludedDiameter: 2-1/16"Diameter (Metric): 52mmMax Range Outer Scale: 16VVoltage: 12V