Brand HANTEK Model CC-65 Quantity 1 Color Blue + Black Material Plastic DC Current 1 mV /10mA +/-(1.5%+/-5mA) 10mA - 20A; 1mV/100mA +/-(2%+/-20mA) 100mA - 40A; +/-(4%+/-0.3A) 40A - 65A AC Current 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) Other Data 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 Power Supply 1 x 9V 6F22 battery (not included) Packing List 1 x Current Clamp Meter Multimeter 1 x English user manual