Zero Volt Harness – Required for Castle PayPlus Card Reader Installation

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🔹 Essential Adapter for AP & Vendo Vending Machines The Zero Volt Harness is required when installing Castle PayPlus U1F credit card readers on Automatic Products (P series) or Ven do vending machines. It ensures proper power and signal compatibility for seamless operation. Designed specifically for Castle U1F card readers Compatible with Vendo and AP P Series vending machines Enables correct low-voltage communication for telemetry and vending logic Show more