brand new and high quality Features: Measuring range: DC4V-30.0V Power supply range: no need to supply power separately, directly use the measured voltage as the power supply, the scope is the same as above. The highest input: DC30V. Note: The input voltage is higher than 32V and may be permanently damaged! Allowable error: 0.1%, the decimal point is automatically shifted Measurement error is +/- 0.1V when measuring voltage >= 10.0V When measuring voltage 100K ohms Working current: red < 23mA Refresh rate: about 300mS once Display mode: three 0.36" LED digital tube Working temperature: -10 C ~ 65 C Display color: Red Dimensions: 33x14.5mm/1.3x0.57inch Cable length: 100mm Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Voltage Meter