Tests Unshielded Shielded Net Wire Telephone & USB Lines Cabler Tester & Tests Audible Continuity Ac Voltage Measurement Range: 200v - 600v Dc Voltage Measurement Range: 200v - 600v Dc Current Measurement Range: 2ma - 10a Overload Protection Auto Polarization Low Battery Indicator Built-in Buzzer Sound Indicates Continuity Includes Digital LCD Display Cable Test Light & Backlight Switch Requires 3 AA Batteries