Features: It is for precise testing of optocouplers, igbts, thyristors, and more, with millisecond level intelligent identification for quick and accurate result. This tool ensures efficient online measurement and enhances durability, increasing service life by 10 times. For electronic engineers, manufacturers, and repair technicians, this tester meets the needs of professional seek reliabled component analysis. Perfect for use in electronic manufacturing plant, repair centers, and research laboratories, it facilitates quality assurances, fault diagnosis, and performances testing. With its compacts designs and type c charging capability, this tool offer unparalleled convenience and portability, making it essential accessories for any electronics toolkit. Specifications: Component:Rubber Size:Approx.12x3x2cm/4.72x1.18x0.78inch Size:Approx.16x3x2cm/6.29x1.18x0.78inch Color:Black Styles:As Picture Shown Package Includes: 1pcs Optocoupler Tester Tool note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.