Features 1、Application Range: The working voltage range is DC8‑100V, the measurement range is DC8‑100V. It supports voltage and remaining power measurement for lithium battery, acid battery, and iron lithium battery. 2、LED Indication: This digital monitor adopts LED power indication, which clearly displays the battery voltage and remaining power. Equipped with PVC waterproof screen protector, for bright backlight. 3、Guard and Alarm: The battery voltage monitor provides reverse polarity guard and low voltage flashing alarm. When the measured voltage is low, the screen will flash to remind the user. 4、Power Off Memory: This battery monitor has power off memory, once the appropriate mode is set, the settings will be retained even after power interruption, there is no need to reconfigure it for subsequent use. 5、Wide Application: This battery voltage meter is suitable for installation in car, RV, motorcycle, boat, SUV, and is suitable for electronic maintenance, DIY electronic projects, and other settings. Specification Item Type: Battery Voltage Meter Model: 4829 Material: PC Measurement Range: DC 8-100V Applicable Battery: For Ternary Lithium Battery, Acid Battery, Iron Lithium Battery Size: Approx. 47.6 x 28.7 x 19.4mm / 1.9 x 1.1 x 0.8in Package List 1 x Battery Voltage Meter 1 x Connecting Line