Features 1、REAL TIME DISPLAY: LY6W provides a multi function, excellent high definition display. Monitors the battery capacity and voltage status in real time, allowing you to know the battery capacity well 2、SAFETY PROTECTION: Real time status monitoring of battery power percentage and voltage, positive and negative poles are directly connected with non reverse connection protection design, safe to use and simple to connect 3、PORTABLE AND WATERPROOF: Portable waterproof voltmeter, come with small size, light weight, waterproof surface 4、APPLICABLE SCENE: The light color is yellow, obvious and easy to see, suitable for RV, battery car, etc. 5、SCRATCH RESISTANT MATERIAL: Using excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification Item Type: Battery Capacity Indicator Material: ABS Model: LY6W Display Color: Yellow Storage Temperature: -20-60 Degrees Celsius Working Temperature: -20-50 Degrees Celsius Suitable for RVs, battery cars, etc. Package List 1 x Indicator 1 x Line 4 x Screw