Audio Polarity Checker Phase Detector Self-Test Auto-Off PD-9A Speaker Tester $43.00
Polarity Reversing Momentary Rocker Switch 20A 12V DC Motor Control 7Pin up down $21.25
IndusTec 30A Rocker Switch - Polarity Reversing DC Motor Control Momentary 12v $13.99
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Industec Motor Polarity Reversing Momentary Switch DPDT 12V 24V 20AMPS SEE VIDEO $9.29
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