Features: This op Tester instantly detects operational amplifier chip quality using double color LED indicators green for functional chips and red for defective 1, eliminating the need for complex circuits and power setups. Featuring a standard DIP 8 socket, this IC tester supports broad compatibility with op amps like TL071, TL081, and TL072, and includes in circuit testing to avoid desoldering chips from boards. Ideal for electronics repair technicians, enthusiasts, and component screening professional who handle sound equipment maintenance and electronic projects. Perfect for workbench diagnostics, field troubleshooting of portable sound devices, or component verification during speakers systems repairs. With built in reverse polarity defense and a auto recovery fuses, this portable and strong metal module operates on 5V 12V power, ensuring stable and safe testing in any environment. Specifications: Component : metal Size: about 9.5X5.8CM/3.74x2.28inch Package Includes: 1xOperational Amplifier note: 1.Please allow 1-2cm 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.