This is a battery level indicator, which is made of ABS, electronic and copper materials. It is practical and durable and can serve you for a long time. It has a reasonable design, designed to help the battery capacity and voltage. This is a stable and reliable battery level indicator, responsive, efficient and professional, and will serve you well. Features -Color:Black -Material: ABS, Electronic, Copper. -Size: About 5.30X3.81X3.20cm/2.08X1.50X1.26inch. -Input voltage: 12V/24V. -Output voltage: ladder type digital display 5 (V). -Measuring range: 12-72 (V). -Ambient temperature: -30—85 ( degree centigrade). -Voltage measurement error: +-5%. -Waterproof rating: IP65. -Mainly made of high-performance ABS and strong copper materials, safe and durable. -The design is reasonable, simple and practical, and can be replaced quickly, which is convenient for you to use. -Fine workmanship, excellent texture, excellent durability, and can serve you for a long time. - , practical, professional and reasonable, can provide you with battery protection, and will bring you a good experience. -Lightweight and compact, it does not take up too much space, making it convenient for you to store and carry. Package list: 1 x Electricity Meter