Cat III TRMS Autoranging 400A AC/DC Digital Clamp Meter - Electrician's 400A Clamp Current Meter.Cat III TRMS Autoranging 400A AC/DC Digital Clamp Meter features include: Santoprene is overmolded on the outer surface for comfort Conforms to the IEC 61010-1 &: IEC 61010-1-032 standard Double insulation (protection class 600V CAT III) True RMS for AC voltage and current Max. diameter for conductor: 1.66in, Secondary injection molding case Display: 3999 counts Decimal Point Readings Auto/Manual range Auto zero key for DCA Data hold function Max/Min function Back light function Jaw lighting Auto power off Continuity test Diode test SMT application DCV: 4/40/400V ±:0.8%, 1000V ±:1.0% ACV: 4/40/400V ±:1.0%, 700V ±:1.2% DCA: 400/1000A ±:3.0% ACA: 400A ±:2.5% Resistance: 400/4k/40k/400k/4M ohms ±:1.0%, 40M ohms ±:2.0% Frequency: 40Hz to 100kHz ±:0.1% (from test terminal) 40Hz to 400kHz ±:0.1% (from current clamp) Power: 1.5V/AAA x3 Cat III TRMS Autoranging 400A AC/DC Digital Clamp Meter Dimensions: 8.9": X 3.4": X 1.3in, Weight: 11.2oz. Order Qty of 1 = 1 Piece Below is more info on our Cat III TRMS Autoranging 400A AC/DC Digital Clamp Meter