The Avantco 100619 Door Switch is a reliable replacement component designed for a wide range of CFD and ZPT Series refrigeration units. This switch detects door position and ensures proper operation of interior lighting, evaporator fans, and energy-saving functions. When the door opens, the switch triggers the correct response to maintain safe temperatures and efficient system performance. Built for heavy commercial use, it restores proper refrigeration control and helps maintain product integrity. Key Features Durable door-activated switch for commercial refrigeration units Controls interior lighting and fan operation based on door position Helps maintain stable temperatures and reduce energy consumption Ensures proper system operation when doors open or close Long-lasting construction suitable for continuous daily use Specifications Part Number: 100619 Type: Door Switch Function: Controls lights, fans, and door-dependent operations Application: Commercial refrigerators and freezers Compatible Models (Shortened List): Avantco A-12F-HC Avantco A-12R-HC Avantco A-19F-HC Avantco A-19R-HC Avantco A-23F-HC Avantco A-23R-HC Avantco A-35F-HC Avantco A-35R-HC Avantco A-49F-HC Avantco CFD-1RR ?and more. Why Choose This Item This door switch provides reliable activation, OEM-level compatibility, and long-lasting durability, making it essential for keeping your refrigerator or freezer operating efficiently. It helps maintain safe holding temperatures, improves energy efficiency, and minimizes system wear?ensuring your Avantco refrigeration unit performs at its best.