[DETAIL] Technical Parameters: Name: DC current and voltmeter Voltage measurement range: 0-100V Current test range: 0-10A, 0-50A, 0-100A Power supply range: DC4-30V Voltage error: ±0.1% Current error: ±1% External shunt specification: 75 milliohms Working current: <20mA Refresh speed: about 300mS/time Display mode: double three-digit 0.28'' LED digital tube Display color: red + blue Lead length: 15cm Size: 48x29x22mm Mounting hole: 46x27mm Working temperature: -10℃-65℃ Caution: 50A or 100A current voltmeter must be connected to a shunt to measure current! ! ! [ATTRIBUTES] - Battery Included: No - Hign-concerned Chemical: None - Voltage range: Other - Battery Included: No - Hign-concerned Chemical: None - Voltage range: Other - Certification: CE - Origin: Mainland China - DIY Supplies: Electrical - Power Supply: DC - Display Type: Digital Only - Dimensions: 48x29x22mm - Operating Temperature: -10-65 - Accuracy Class: 0.01A/0.1V