The Blue Sea DC Analog Voltmeter displays voltage (8-16V) on your marine equipment. Easy to read characters. Meter senses and powers from a simple 2-wire connection. Backlight requires separate 12V or 24V DC connections and operates at 16 mA @ 12V DC and 20 mA @ 24V DC.• Meter Current: 1 Milliampere @ full scale Backlight requires separate connection 1 mA current at full scale | DC Micro Analog Voltmeter, 8-16V