Keep an eye on your car’s health with this handy dual voltmeter and thermometer! Just plug it into your cigarette lighter socket, and it shows your battery voltage and interior temperature on a clear LED screen. Works with 12V, 24V, and even 36V systems—great for cars, trucks, SUVs, and buses. Helps you catch battery issues before you’re stranded, and lets you monitor cabin temp for comfort. Easy to install, no wiring required. The sensor bends so you can place it away from heat sources for accurate readings. Compact design fits neatly in most cup holders or dash areas. A smart, low-cost tool for any driver who wants to avoid surprises. Perfect for road trips, daily commutes, or older vehicles. Peace of mind is just a plug away!