Speaker Polarity Checkers OPC-288 Onsoku
Mã sản phẩm:
OPC-288
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This unit checks the polarity of loudspeaker units and makes judgment.
The result of a check is shown with a +/- LED indicator within approximately 0.2 seconds.
When the buzzer switch is set to on, a buzzer sounds if a reversed polarity is detected.
An external signal can be inputted when the selector switch is set so.