LME73 Flame Safeguard

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The LME73 flame safeguard is designed to pair with the Siemens SQM4 or SQM5 actuator. Having the actuator paired to the LME73 flame safeguard is beneficial for the following applications: packaged burner or when using a ratio regulator. The benefit of having the actuator paired to the LME73 flame safeguard is that the LME73 will drive & prove the actuator position for purge & ignition using closed loop control. Modbus communication module and remote display options available.


  • Drive & prove Siemens actuator open for purge & closed for ignition
  • Safety interlocks wired independently into unit for specific fault indication
  • Built in display showing fault indication and flame signal strength
  • Configurable safety parameters to fit your application

LME73.811A1PKG, Modulating actuator control, ignition position equals low-fire
LME73.812A1PKG, Modulating actuator control, independent ignition position
LME73.840A1PKG, Valve proving, actuator control can be disabled

North American 110V

CE 220V