Features: Clamp ammeters referred to as clamp meter. The work ismainly composed of an electromagnetic current meter and bushing type current mutual inductor. Straight through current transformercore made of movable opening, and a clamp on ammeter. The utility model relatesto a portable instrument which can directly measure the AC current of a circuit without disconnecting the circuit. Can measure AC or DC voltage, AC current, resistanceand test continuity. Manual select measurement function and range. Overloadprotection for the whole measurement range. LCD display with backlight, convenient to operate and read. Data hold function, low battery indication, auto power off. Suitable for electrical equipment testing and maintenance. Specifications: Material:ABS Size:Approx.14.9x6.55x3.05cm or 5.86x2.57x1.2inch Color:Red or Blue or Yellow Display: digital display. Measuring current range: 20 (A) Measuringresistance range: 200K () Note: 1.Please allow 12cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Digital Clamp Multimeter