Why you need this voltmeter Monitor battery and generator status in real time to avoid unexpected breakdowns and to know when charging or replacement is needed. Precision readings let you detect undervoltage or overcharging conditions early, protecting electronics and extending battery life. Compact, unobtrusive display gives clear information day or night without cluttering the dashboard. Key features and benefits Real digital red LED display: Provides clear, easytoread voltage information at a glance in daylight or at night. Wide range and accuracy: Measures 12V–24V electrical systems with a precision of ±0.2V for reliable diagnostics of battery and generator performance. Compact footprint: Miniature black shell sized 70 × 40 × 30 mm and weighing only 10 g fits tightly into most dashboard spaces without obstructing view. Builtin overload protection: Internal circuitry prevents current overloads and voltage spikes, supporting safer operation and reducing the risk of damage. Temperature rated for vehicle use: Designed to operate safely in temperatures from 0 to 60°C across varied driving conditions. Broad compatibility: Works with cars, trucks, RVs, and motorcycles that use 12V or 24V electrical systems; not limited to specific makes or models. Practical advantages Quick installation and unobtrusive monitoring let you keep voltage visible continuously, so problems are noticed before they become failures. Accurate realtime readings support better maintenance decisions—charge, , or further test—saving time and costs. Overload protection and a robust operating range make it suitable for daily driving, long trips, and varied climates. Typical use scenarios Long road trips: Keep the alternator and battery status visible to avoid being stranded with a dead battery in remote areas. Work trucks and RVs: Monitor charging systems while running heavy accessories (lights, refrigerators, winches) to prevent electrical overloads. Motorcycles and scooters: Install on a compact dash to track voltage during stopandgo riding and ensure the battery is charging properly. Specifications Display: Real digital red LED Voltage range: 12V–24V systems Measuring accuracy: ±0.2V Size: 70 × 40 × 30 mm Weight: 10 g Operating temperature: 0 to 60°C Protection: Builtin overload/voltage spike protection Compatibility: Cars, trucks, RVs, motorcycles with 12V or 24V electrical systems