CAT III 600V 3-3/4 digit LCD Backlit Display, with Analog Bargraph. Display Counts: 4000. Auto Ranging. AC/DC current: 0.1µA to 4000µA. (using test leads). AC current: 0.01A to 400A (using jaw measurement). Ranges: ACV, ACA, DCV, DCA, Resistance, Continuity, Capacitance, and Temperature. Maximum conductor size 30mm. Continuity test below 40 ohms, buzzer will sound. Auto Power off. Double injection outer case.