Feature: 3 in 1 battery voltage meter - With a switched function button to choose the battery capacity, real-time voltage or turn off; New alarm function, when the battery capacity is lower 20%, the screen display will flash to alarm Universial battery status monitor -Wide working voltage input range DC 12V-84V.Can be automatically detect to the accurate voltage according to the battery voltage. Suitable for various battery types - fits to 12V/24V/36V/48V/60V/72V/84V lead acid battery, Ternary Lithiums battery, Polymer -ion battery, 3-15 series ion battery, Storage battery, Water battery, etc. (Note: it cannot be used for Iron Phosphate batteries, 1-2 Li batteries in series and over 15 Li batteries in series.) Sensitive LCD digital display - the small battery voltage reader with a PVC waterproof screen poterctor, clear and bright white backlight LCD display from any angle; Low working power consumption(5mA max), in additional there's a turn off button for it. Multifunctional application - suitable for golf cart, RV, marine, boat, club car, motorcycle, car, bike, ebike, scooter, truck, vehicle, jet ski, forklift, etc. Specification: Working voltage: DC 12-84V Working current: < 5mA Working temperature: 0 -40 degC Display: capacity/voltage Material: ABS Product dimensions(WxDxH):2.41"x1.31"x0.53"/ 61.3x33.3x13.5mm Mounting hole dimensions(WxD): 2.3"x1.12"/ 58.5x28.5mm Install method: with buckle, no screw needs; supporting 30cm terminal wire, easy maintenance Package List: 1 x DC battery meter 1 x terminal wire