| Brand | Unbranded |
|---|---|
| Model | PC218 |
| Pulse rate | 1Hz |
Check the listing for details. PC218 Phase Polarity Tester Checker Detector Speaker Microphone Sound Testing. Condition: New. Listed at 144.51 USD. Input impedance (Mic) : 1KOhm. - 1 x Tester. - Input level (Mic) : 10mV - 1V. - Power : 9V PP3 battery (= approx 50 hours). Physical Characteristics(For each box) - Power drain : 10mA. - Output load impedance : >1K?.