TPI 126 Digital tester has a 4,000 ct. LCD screen, 0.3 % DCV simple precision, 0 to 600 volts Alternating Current and Direct Current- max resolution 0.1Volt, 0 to 40M ohm resistance - max resolution 0.1 ohm, stability beeper, 0 to 400 mA amps A Alternating Current and Direct Current max resolution 0.01mA, Autoranging, Min/Max, Data Hold, Sleep mode/automatic off, is cULus 61010-1, CAT II - 1000V, CAT III - 600V safety-rated, and has a 3yr. Ltd. Warranty.