Gardner Bender GDT-3200 Digital Multimeter, 7 Funct., 7 Range, Tests AC/DC Volt, Resist, Diode, Continuity, Temp and Battery, Auto Ranging 7 Position, smooth rotary dial Durable, drop resistant housing Clear, digital LCD display with backlighting Full family of digital multi-meters test AC Voltage, DC Voltage, Resistance, Continuity, Temperature, Diodes, and Batteries. Manual and Auto Ranging Styles Functions: Resistance 20meg ohms; Diode Test; Audible Continuity Test; Temperature -40 to 1832F; Battery Testing 1.5V