The Overheat Switch for Burner (Rheem RTG20316AK) is an essential safety device for tankless water heaters. This switch is designed to detect excessive temperatures and automatically shut down the burner to prevent damage and ensure safe operation. Constructed with high-quality materials, it is built to withstand the rigors of high-temperature environments. Its compact size allows for easy installation in various Rheem models, making it a vital component for maintaining system safety and efficiency. This switch meets industry standards for reliability and performance.