139B Polarity Tester
Price:Negotiable
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139BPolarity Tester
Product Features:
Unaffected by environmental noise, instantly determines the positive and negative polarity of any type of speaker or headphone, suitable for use in production lines.
Easy to learn and use.
Pulse Measurement Mode | |
Polarity | a. Positive Polarity: Green LED lights up and beeps. b. Negative Polarity: Red LED lights up, buzzer remains silent. |
Sensor | ECM Capacitor Microphone |
Five Selection Switches | WF : Suitable for woofer MT : Suitable for tweeter & headphone. Ext.1~Ext.3 : External instrument interface |
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| Origin: | China / Guangdong / Shenshi |
