digital ammeter (0-10A) ammeter head; powered 4-30V

specification: 1.Header working voltage: 4-30 v power supply , reverse connect protection, reverse connection would not burn 2.Measuring range: 0-10 a dc current 3.The machine power consumption: < = 20 ma, very province electricity 4.The refresh speed: > = 500 ms 5.Test accuracy: 1% + 2 words 6.Display color: red, green, blue, yellow, 7.Dimension: 45 mm * * 20 mm to 26 mm (plastic shell size) Digital tube size: 38 mm * 19 mm * 8 mm 8.(0.56 inch three integrated digital tube) 9.Use scope: used for dc current is not more than 10 a current measurement.