Heidelberg Reflex Light Barrier (C4.110.1321) The Heidelberg Reflex Light Barrier, model C4.110.1321, is a precision-engineered sensor component designed for optimal performance in Heidelberg printing systems. We maintain a large inventory of original and replacement parts to support your maintenance needs. Key Benefits & Applications: Compatibility: Specifically designed for use with CD102 printing presses. Extensive Inventory: We carry thousands of original and replacement