<p>1. This operational amplifier tester is used to evaluate the quality of operational amplifiers. Its operating voltage is 5.5V-28V</p> <p>2. Insert the power plug into the power socket, the tester will emit a short beep, the indicator light will flash for about 3 seconds, and then the tester starts working</p> <p>3. If you want to detect chip components, you can put the chip components into the test socket with tweezers</p> <p>4. After putting in the item to be tested, press the start button and the tester starts working</p> <p>5. The LED indicators (pass and damage) on the panel will show whether the operational amplifier has passed the test</p> <p>The four-channel operational amplifier tester is mainly used for the detection and maintenance of industrial control equipment circuit boards and complex instruments</p> <p>Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.</p> <p>Color: As shown</p> <p>Material: aluminum alloy</p> <p>Package Contents:</p> <p>1 x Operational Amplifier Tester</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>