Efficient Measure Range: 1mV/100mA: 100mA to 20A, Multimeter Range is set to DC or rms AC 200mV 1mV/1A: 1A to 200A, Multimeter Range is set to DC or rms AC 200mV; 200A to 650A, DC or rms AC 2V DC Current Accuracy: 0 to 650A, +/(3% reading + 2A ) AC Current Accuracy: 50Hz arrive at 400Hz Captured Conductor Size: Max. 30mm Low Battery Indicator: Red LED Lighting Operating Temperature: 0°C to 50°C 70% RH Storage Temperature: -20°C to +70°C, 80% RH Battery Type: 1 x 9V 6F22 Battery (NOT Included) Output: BNC Plug Dimensions: 175 x 70 x 33mm / 6.9 x 2.75 x 1.3in Weight: 235g / 8.31oz