Features: - Simple two-wire installation. Compatible with DC power input from 8V to 40V, including 12V and 24V battery systems. - Dual USB ports provide 5V/2A maximum total output with automatic current distribution. - Universal square-hole snap-in design for easy and versatile mounting. - Built-in LED voltage display for real-time battery monitoring—ideal for motorcycles, cars, trailers, and other vehicles. - Large, high-contrast 0.36-inch three-digit LED display with self-check at startup (similar to automotive instrument cluster behavior). - Visible in all lighting conditions—including daylight, rain, and nighttime. Specifications: - Material: ABS - Dimensions: 48 x 29 x 16 mm (1.88 x 1.14 x 0.62 inches) - Mounting hole size: 46 x 27 mm - Display resolution: 0.01V (below 10V), 0.1V (10V and above) - Accuracy: ±1% - Display type: Three-digit 0.36-inch LED digital tube - Lead length: 20 cm - USB output: 5V, up to 2A total (shared between two ports) - Input voltage range: 8–40V DC - Operating temperature: -10°C to +65°C - Refresh rate: ~200 ms Note: - Slight measurement variations (±1–2 cm) may occur due to manual measurement. - Screen color options: Red, emerald green, or blue. - Actual product color may vary slightly depending on monitor settings. Package includes: - 1 x Voltmeter