Review on ⚡️ MICTUNING MIC-DV-077 LED Digital Panel Double Voltmeter with Rocker Switch Style, Blue Voltage Monitor for Car Pickup RV Truck Dual Battery Pack by Yuan Walsh

Installed it in my camper van to monitor chassis and battery voltage while driving. That does exactly what I want. I connected the main wire to the switched chassis power supply and the auxiliary wire to the house battery. It only shows up when the ignition is on, which is what I wanted. The main purpose of this display is to control the system that links the batteries together to charge them from the alternator while driving as I often use heavy loads such as a propane fridge while driving and usually store dry so it is important make sure the batteries are charging at home. during driving. Others have complained about the accuracy but mine runs down to +0.1v and I have more accurate readings including amp hour meters for real monitoring. This is a great $14 product. Will definitely buy again. I am a retired electrical engineer.