Quick and Easy Setup: The GY-6GS Battery Power LCD Display Voltage Meter features a user-friendly double button design, allowing you to set it up in just a few seconds. This intuitive interface ensures that you can start monitoring your battery power without any hassle. Energy-Saving Switch: Equipped with a convenient switch, this voltage meter allows you to turn off the power completely, ensuring zero power consumption when not in use. This feature helps conserve energy and extends the lifespan of your device. Accurate Battery Monitoring: The GY-6GS meter provides precise readings of battery power percentage and voltage, enabling you to intuitively understand your battery's usage status. Stay informed about your battery's condition at a glance, ensuring optimal performance and reliability. Smart Alarm Function: To prevent unexpected power loss, the meter includes a light alarm function. When the power value drops to 20% or below, the backlight flashes to alert you, giving you ample time to recharge or replace the battery. Wide Compatibility: This versatile voltage meter is compatible with various battery types, including lead acid, lithium, and iron lithium batteries. You can easily set the meter to match your specific battery type, making it a flexible solution for all your power monitoring needs.