Description: Voltage Display: This 12-24V LED Battery Level Indicator is designed to automatically recognize the current power level upon powering up, suitable for batteries powered devices such as RVs, forklifts, golf carts etcColor Display: The indicator features a 10 segment LED display with three colors (1 red, 2 yellow, and 7 green). It provides a clear visual representation of the battery's remaining powerPower Reminder Function: When the remaining power drops to 20%, the second yellow light will flash as a reminder. If it further drops to 10%, both the first red light and the second yellow light will alternate flashing as an urgent charging reminderDelayed Display: The indicator has a delay function of 155 seconds when there is significant battery consumption (like when an electric vehicle is climbing uphill). This prevents quick fluctuations in the displayed battery level and gives users an accurate understanding of actual battery capacityCharging Delay: During charging, each segment of the display lights up sequentially every 200 seconds like flowing water light for easy monitor of charging progress Specification: Color: BlackMaterial: ABS Size Chart: 5.3cmx3.2cmx2.4cm/2.09inchx1.26inchx0.94inch Package Includes: 1 LED Battery Level Indicator Note: Please allow slightly errors due to manual measurement and different monitors.