The FRS100 series is a Multi-Burner safeguard control Flame Relay. The FRS100 series utilizes a self-checking circuit to ensure safe start-up operation. If abnormal conditions exist , ignition start is perevented or system safety is secured by the shutdown of combustion if the main flame fails durring operations. This compact controller is used with a flame rod or Ulra Violet Flame Detector for batch operation of combustion equipment. The unit can be DIN rail mounted. Non UL/FM Approved