The Siemens QRA55.G27 is a high-sensitivity UV flame detector designed for the reliable supervision of gas flames, yellow- or blue-burning oil flames, and for ignition spark proving. Engineered for use with Siemens burner controls, such as the LMV5 series, this detector is suitable for continuous or intermittent operation on burners of any capacity. Its robust construction with an IP65 protection rating ensures dependable performance even in demanding industrial environments, making it a critical component for enhancing the safety and efficiency of modern combustion systems.