Extech MA440 Clamp Meter with Non-Contact Voltage Detector; 400A AC; 1.2" Jaw Size; Fits up to 500MCM; Relative Mode for Capacitance, Data Hold, Auto Power Off and Low Battery Indicator 1.2" (30mm) jaw size fits conductors up to 500MCM Built-In Non-Contact Voltage Detector (NCV) Large backlit LCD display Functions include NCV, AC/DC Voltage, AC Current, Resistance, Capacitance, Frequency, Diode Test, Continuity Relative mode for Capacitance, Data Hold, Auto Power Off and Low Battery Indicator Complete with test leads, three AAA batteries and pouch