Features: This digital clamp meter is a small 4000bit trueRMS meter. This instrument adopts the newly launched revolutionary digital multimeterchip. The chipis equipped with a digital processor to measure 4MHz digital trueRMS value.The built-in calibration program can easily complete various high-precisions digital correction. Clamp ammeters referred to as clamp meter. The work is-mainly composedof an electromagnetic current meter and bushing type current mutual inductor. Straight through current transformercore make of movable opening, and a clamp on ammeter. The utility model relatesto a portable instrument which can directly measure the ACcurrent of a circuit without disconnecting the circuit. LCDdisplay with backlights, convenient to operate and read. Data hold function, low battery indication, auto poweroffs. Suitable for electrical equipment testing and maintenance. The jaw opening measures current in a conductor without touchingor interrupting the circuit. Its slimand compact size makes it easyto operate in narrowspaces. Specifications: Material:ABS Size:Approx.7.7x3.2x21cm/3.03x1.25x8.26inch Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Set Digital Clamp Multimeter