The Winco FWS500-P11 is a high-quality power knob designed specifically for the FW-S500 food warmer thermostat. This adjustable knob allows for precise temperature control, ensuring optimal heating for your food items. Constructed for durability and ease of use, it is an essential accessory for maintaining the performance of your food warmer. Sold individually, it provides a reliable replacement option to keep your food warmer functioning efficiently.