This operational amplifier tester is designed to evaluate the performance of operational amplifiers. It operates within a voltage range of 5.5V to 28V. Insert the power plug into the power socket; the tester will emit a short beep, and the indicator light will flash for approximately 3 seconds before the device begins operation. To test chip components, use tweezers to place the component into the test socket. After inserting the component, press the start button to begin the test. The panel features LED indicators (Pass and Damage) that display the test results. This four-channel tester is ideal for diagnosing and maintaining industrial control equipment circuit boards and complex instruments. Product appearance, color, and printed text may vary slightly between batches; these differences do not affect functionality. Color: As shown in image Material: Aluminum alloy Package Contents: 1 x Operational Amplifier Tester Note: Other items not included. Lighting effects and display settings may cause slight color variations between the image and the actual product. Measurement error allowance is +/- 1-3cm.