This current clamp adapter allows you to measure current without breaking the circuit, which should be attached to general multimeters for work. Features: Measuring Range: 600A DC/AC current. Can measure the current of multimeter and the current waveforms of oscilloscope. Clamp design and only two buttons, easy to operate. Jaw opening of 45mm to measure current without touching or interrupting the circuit. Comes with test probes for convenient measurement. Includes LED low power indication. Suitable for general multimeters. Specifications: Brand Name: HoldPeak Color: Grey + Blue Material: ABS Jaw Opening: 45mm *Measuring Range: DC Current: 600A AC Current: 600A Signal Output: 1mV/1A Output Impedance: 10K Conversion Accuracy: (3.0%rdg+10dgt) Power Supply: 1 * 9V 6F22 Battery (NOT Included) Item Size: Approx. 17.9 * 9 * 3.6cm / 7.05 * 3.54 * 1.42in Item Weight: Approx. 263g / 9.28oz(Without Battery) Package Size: Approx. 21.4 * 13 * 5.3cm / 8.43 * 5.12 * 2.09in Package Weight: Approx. 325g / 11.46oz Note: It should be attached to general multimeter for work. Package List: 1 * Clamp Adapter with Test Probes 1 * User Manual(English)