This is a general purpose 3 ¾ digit AC DC Clamp meter with backlit LCD display. The jaw opening is 60mm approx. & can measure AC DC current through the clamp upto 1000A.It also measures DC Voltage-1000V, AC Voltage-700V, Resistance upto 40 M?, Frequency-20MHz with duty cycle, continuity & diode measurements. This meter also has Capacitance range upto 100 ?F & is powered by one 9V battery.