100% new and high quality High precision, high reliability, suitable for high-end application With reverse protection, anti-not burned. Technical parameters: Voltage measurement range: 0.0V-100V Current test range: 0-10A Power supply range: DC4-30.0V External shunt specifications: 75 milliohms Operating current: less than 20mA Refresh speed: about 300mS once Display: double three 0.28 inch LED digital tube Display color: red + blue Lead length: 15cm Dimensions: 48 x 29 x 22 mm Mounting hole: 46 x 27 mm Operating temperature: -10 ~ 65 Colour: Black Material: PC + metal Package Contents: 3* LED Digital Voltmeter Ammeter Tester 6* Connecting Cable Only the above package content, other products are not included. Note: different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. new and high qualityHigh precision, high reliability, suitable for high-end applicationWith reverse protection, anti-not burned.