The AllPoints Foodservice Parts & Supplies 441684 is a Low Water Cut-Off Probe (LWCO) designed specifically for Hatco Food Rethermalizers, including models FR2-3, FR2-3B, FR2-4, FR2-4B, FR2-6, FR2-6B, FR2-9, and FR2-9B. This essential component ensures safe operation by automatically shutting off the unit when water levels drop below a certain threshold, preventing overheating and potential damage. Constructed for durability and reliability, the probe is easy to install and maintain, making it a vital addition to your foodservice equipment for optimal performance and safety.