Dual battery display, the switch switches between 2 batteries for the voltmeter. Voltmeter reads up to 30vdcDual Voltmeter different types$24.95Pricetype*SelectQuantity*Add to CartDetailsComes with: 1 x Dual Battery Rocker Switch Blue backlight only 1 x Double USB/Voltmeter in one or voltmeter 1 x Plastic Holder
