PIE Precision Interface Electronics PIO/P-AUXTHE PIO/P-AUX AUXILIARY INPUT/CD CHANGER SWITCHER IS DESIGNED FOR USE WITH AFTERMARKET PIONEER IP-BUS PRODUCTS. THE PIO/P-AUX IS PLACED IN SERIES BETWEEN A PIONEER IP-BUS CONTROLLER AND SLAVE UNIT. THE PIO/P-AUX ALLOWS YOU TO MAINTAIN CONTROL OF THE PIO
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