The Aqua Hot Diesel Burner 1.0 12V Photo Eye Flame Sensor is part of the diesel burner that's mounted on the Aqua Hot Heating System. Aqua Hot systems are designed to make your RV lifestyle more comfortable by offering a quiet, fume-free system that produces even, moist heat and continuous hot water on-demand. Aqua Hot Heating• Even heat distribution with no hot or cold spots• 5° temperature difference from floor to ceiling• Warms bay areas to prevent pipes and tanks from freezing• No loss of humidity• Moist, comfortable heating• Even temperature control• Burner in bay or cargo area Aqua Hot systems produce even, moist heat & continuous hot water on-demand | Aqua Hot Diesel Burner 1.0 12V Photo Eye Flame Sensor for All Webasto Burner Heads