Optocoupler Tester Tool for 4 Pin Optocouplers with USB Power Connection
ab 7,75 €
Applicable to 4-pin optocouplers, other types of optocouplers are temporarily not applicable. If the indicator light is always on or off, remove the optocoupler from the circuit board, insert it into the optocoupler seat of the breadboard, and reconfirm the test results.
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