Blue Sea Mini OLED DC Voltmeter Blue Seas Mini OLED DC Voltmeter monitors DC voltage on a bright, waterproof, daylight readable OLED screen. Reverse polarity protected Mounts in a common 1-18 hole Nominal Voltage 12V DC 24V DC Cut Out Dimensions 1-18 in California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Gauge Wiser Yes Product MPN 1733 Product UPC 632085017330 Fast Ship In Stock Ships Today