The Monitor Heater Flame Detect Plug for M-21 part number 6118 919 is a crucial component for ensuring safety and efficient operation of your fireplace or stove. This Flame Detective Plug specifically designed for kerosene fuel type, provides a reliable way to detect flames and alert you to any potential fire hazards. With a unit quantity of 1, this plug is a necessary addition to your home improvement and home & garden needs, offering peace of mind and protection against potential fires.