Optocouplers, also known as optocouplers, are commonly used electronic components that are difficult to test with ordinary instruments. If a optocoupler with quality issues is installed in the circuit, it cause the circuit to not work properly and it be troublesome to replace it. Using this circuit, insert the optocoupler into the test stand, and after powering on, the LED flashes to indicate that the optocoupler is in good condition., Weight: 0.09700339528 pounds, Manufacturer: Tuesoa