1.HD90A 3 1/2 small digital clamp multimeter is a Professional clamp multimeter! 2.Mini and Practical! 3.With continuity test! HD90A is 3 1/2 digital clamp meter with steady performance,safety and reliability, full function. The instrument has a unique and more attractive outline, molding is more beautiful and convenient operation. The instrument applies high-performance A/D transformer, all the components are SMD surfaced. And all the range positions have overloading protection function, not easy to damage. AC current is measured through the clamp jaw with four positions of 2000mA,20A,200A,600A,the rest input through the test lead,and can test AC Voltage,DC Voltage,Resistance,Diode and continuity. General characteristics:1.Max voltage between the voltage input end and earth: DC 600V CATⅡor 300V CATⅢ.2.Display model: LCD display, max reading “1999”.3.Measurement principle: double integration A/D transform.4.Range select: manual5.Measurement speed: 2.5~3 times/sec6.Polarity display: it displays “—” as inputting negative polarity.7.Overloading display: only 1 appears on the display screen.8.Data hold function: “ H ” is shown on the top of LCD.9.Low battery display: it displays on the left of LCD.10.Power supply: 2×1.5V11.Dimensions: 170×65×27 mm12.Weight: approx. 140g (without battery)13.Max jaw opening: 25mm14.Accessories:User's manual, test lead, battery