... of 3999. 2.AC /DC Voltage to 750V/1000V 3.Auto Power Off AUTO RANGE AC CLAMP MULTIMETER1. Function*AC /DC Voltage, AC Current, Resistance, Capacitance ... * AC /DC Voltage to 750V/1000V * Clamp opening size: 1.89" (48mm) * Data Hold to freeze the displayed value * Auto Power ... degreen 2. * Power supply: "AA" 1.5V 5# two piecesSPECIFICATIONS:AC Current:40A,400A,1000AAC Voltage: 400mV , 4V , 40V , 400V , ...