This NTI Flame Sensor is a crucial component designed for use in heating, ventilation, and air conditioning (HVAC) systems. The sensor's primary function is to detect and confirm the presence of a flame in the combustion chamber of the system. When a flame is detected, it sends a signal to the control board to continue fuel supply for sustained operation. Conversely, if no flame is detected, it signals the control board to stop fuel supply, preventing unburned gas from accumulating. This safety feature makes it an essential part of any HVAC system. The NTI Flame Sensor is constructed with durable materials that can withstand high temperatures and harsh conditions within the combustion chamber. It operates using infrared technology to accurately detect flames even under varying light conditions.