Har-Ken HK-125 PL Polarity Tester
The Model HK-125 PL Polarity Tester uses two bipolar LEDs to indicate the polarity of a DC voltage on pins 2 & 3 of the XLR connector.
The Model HK-125 PL Polarity Tester uses two bipolar LEDs to indicate the polarity of a DC voltage on pins 2 & 3 of the XLR connector.