Self-Powered Red LED Voltmeter

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Super simple to install, simply connect the power you want to monitor! Some panel meters require a power source in addition to a sensor wire to the source you want to monitor. Thes e units connect straight up, with no fuss! Suitable for use between 4.5V and 30VDC, they're suitable for many DC applications including cars, boats, caravans, and other 12-24V sources. However their wide measurement range means they can be applied to many other applications too! Red coloured display. Panel mount with self-retaining spring clips. Show more