Waterproof 12V Polarity Reverse Switch - Control Motor $11.77
PD-9A Polarity Checker Phase Detector Self-Test Auto-Off Audio Speaker Testing $45.00
Audio Polarity Checker Phase Detector Self-Test Auto-Off PD-9A Speaker Tester $43.00
Letourneau Technologies Polarity Sensitive Switch 409-2643 Wh Relay 35030479 $712.50
PM Fiber Coupler FC/APC Polarization Maintaining Coupler $229.99
Manual 3-Paddle (30 mm or 1.18 in) Polarization Controller without Optical Fiber $169.00
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