Syg A830L digital voltage tester has LCD back-lit display, autovolt automatic AC / DC voltage selection, measuring AC / DC voltage, diode and transistor test, data hold for easy reading, manual ranging mode, 4 X 2.2cm screen, 200mV/2V/ 20V / 200V / 600V ±0.5%+5 DC voltage, 200 / 500mV ±1.2%+10 AC voltage, 9V battery.