Features 1、AC/DC frequency range: up to 20KHz. 2、Effective measurement range: 20mA to 65A DC. 3、Allows your multimeter to measure current data and enable your oscilloscope to measure the current waveforms. 4、Its current transducer is composed by permalloy part, which linearly transform the AC or DC current to AC or DC current voltage. 5、If connect to an oscilloscope by BNC type connector, you're able to observe the current waveforms. Specification Application: Power circuit measurement and malfunction analysis; Motor drive of frequency converter (or other electronics) measurement; Power electronics equipment measurement. Specifications: DCA Range 1mV / 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) 100mA ~ 40A (40Hz ~ 1KHz); ±(4%±30mA) 100mA ~ 40A (1KHz ~ 3KHz); ±(6%±30mA) 100mA ~ 40A (3KHz ~ 5KHz); ±(8%±0.3A) 40A ~ 65A (40Hz ~ 20KHz) Captured Conductor Size Maximum 9mm Low Battery Indicator Red LED Light Operating Temperature 0°C to 50°C, 70% RH Storage Temperature -20°C to +70°C, 80% RH Battery Type 1 * 9V 6F22 Battery (NOT Included) Output BNC Plug Dimension 195 * 70 * 33mm / 7.67 * 2.75 * 1.3in Weight 184g / 6.5oz Package Size 21.5 * 11 * 5cm / 8.46 * 4.33 * 1.97in Package Weight 251g / 8.85oz Package List 1 * Current Clamp with BNC Plug 1 * User Manual (English)