Made of carefully selected materials, this mini DC voltmeter ammeter can serve us well. Premium shell material with refined craft, and durable. Accurate measurement with digital display, convenient to read. Good craftsmanship and reasonable design make it a . Features - Color: Assorted. - Material: Plastic. - Size: About 5.00X3.00X2.30cm/1.97X1.18X0.90inch. - Voltage measurement range: 0. - . - Current test range: 0-999mA, 0-10A, 0-50A, 0-100A (4 ranges are optional). - Power supply range: DC4-30. . - Voltage error: ±0.2%. - Current error: ±1%. - External shunt specification: 75 milliohms. - Working current: <20mA. - Refresh speeds: about 0.35S once. - Display mode: double three-digit 0.28" high-brightness digital tube. - Lead length: current wire 15cm, voltage wire 20cm. - Working temperature: -10 degree centigrade~65 degree centigrade. - The battery voltmeter ammeter made of materials has a . - Can display voltage and current at the same time in such a small size, easy to store. - The installation method is simple and won't take you too much time. - The operating temperature is from -10°c to 65°c, bring convenient for your use. - With small size and light weight design, it is easy to store and carry. Package list: 1 x DC Voltage Current Meter