| Brand | Unbranded |
|---|---|
| Model | PC218 |
| Pulse rate | 1Hz |
Check the listing for details. PC218 Phase Polarity Test Checker Audio Speaker Microphone Sound Phase Detector. Condition: New. Listed at 166.76 USD. PC218 Phase Polarity Tester Checker Detector Audio Speaker Microphone Sound Testing. - Input impedance (Mic) : 1KOhm. - Input level (Mic) : 10mV - 1V. - Input impedance (Line) : 10KOhm. - Input level (Line) : 0.5V to 50VOutput level : 0V to 1V.