The flame scanner 3001 is a system plug-in unit of the 3000 line, which, in connection with the flame detectors of the system, is providing fullscale flame monitoring for any burner output, fuel, and combustion process. The flame monitoring system 3000 is tested by TÜV in accordance with EN298:2012 and approved according to DIN DVGW. It meets the requirements of TRD 411 to 414. The plug-in unit is approved for continuous operation because of continuous fully electronic fail-safe checking of its function.