| Brand | Unbranded |
|---|---|
| Country of Origin | China |
Check the listing for details. Phase Polarity Tester Checker Detector Audio Speaker Microphone Sound Testing. Condition: New, Made in China. Listed at 140.59 USD. Input impedance (Mic) : 1KOhm. - Input level (Mic) : 10mV - 1V. - 1 x Tester. - Input impedance (Line) : 10KOhm. - Input level (Line) : 0.5V to 50VOutput level : 0V to 1V. Usually it costs about 30USD-50USD.