Measuring voltage: 5-48 v Diameter: 36mm / 1.42 inches Interface type: anode and cathode Environmental protection material: plastic Screen color: red, blue, green Applications: cars, motorcycles, ships, etc. Features: Generally applicable to: motorcycles, ships, all-terrain vehicles, all-weather vehicles, campers, caravans, travel trailers, etc. Display: 3 digits, digital LED tube, light display is optional (red, white, blue, green, orange). Suitable for 6 v-30 v. Small size and easy to install, it is very suitable for checking tension. Installed in the hole of 1/8/8 panel facing up, thickness is 0.25, nylon fixing nut will fix the instrument in proper position. The state of the battery between fully charged and fully charged The meter has easy-to-read LED segments and is connected to your 12-volt system. It is used to monitor the storage voltage of the battery, and has a reverse connection protection function, which will not burn the line. Know the voltage status of the battery in time, the purpose of voltage measurement can also be used for other products.