AC/DC frequency range: Up to 20 kHz Effective Measurement Range: 20mA to 65A DC It is a transducer which allows your multimeter to measure current data and enable your oscilloscope to measure the current waveforms. Its current transducer is composed by permalloy and hall element, which linearly transform the AC or DC current to AC or DC current voltage. And if connect to an oscilloscope by BNC type connector, you are able to observe the current waveforms; If connect to a multimeter by banana type connector, you can obtain the current data. Application: Power circuit measurement and malfunction analysis; Motor drive of frequency converter (or other electronics) measurement; Power electronics equipments measurement. Specification: DCA range 1 mV /10mA +/-(1.5%+/-5mA) 10mA ~ 20A 1mV/100mA +/-(2%+/-20mA) 100mA ~ 40A +/-(4%+/-0.3A) 40A ~ 65A ACA range 1mV/10mA +/-(2%+/-30mA) 100mA ~ 10A (40Hz ~ 2KHz) +/-(4%+/-30mA) 100mA ~ 10A (2KHz ~ 10KHz) +/-(6%+/-30mA) 100mA ~ 10A (10KHz ~ 20KHz) +/-(8%+/-30mA) 10A ~ 15A (40Hz ~ 20KHz) 1mV/100mA +/-(2%+/-30mA) 200mA ~ 40A (40Hz ~ 1KHz) +/-(4%+/-30mA) 200mA ~ 40A (1KHz ~ 2KHz) +/-(6%+/-30mA) 200mA ~ 40A (3KHz ~ 5KHz) +/-(8%+/-0.3A) 40A ~ 65A (40Hz ~ 20KHz) Captured Conductor Size ? 9mm maximum Low Battery Indictor ? red LED lighting Operating Temperature ? 0Cto 50C 70% R.H. Storage Temperature ? -20C to +70C, 80% R.H. Battery Type ? 9V DC, NEDA 1604, 6F22,0006P Battery Life ? 100 hours typical with alkaline Weight ? 250 gm typical Dimensions ? 195mm(H) x 70mm(W) x 33mm(D) Output ? Supplied with coil cable with straight banana plug or BNC plug ? Package includes: 1 x Hantek CC-650 AC/DC Current Clamp Digital Multimeter with BNC Connector