The Siemens LMV5 Linkageless Burner Management System offers an easy to adjust fuel-to-air ratio curve, 15 programmable points and four independent positions, a user-friendly interface that speeds up programming/commissioning, and worldwide technical support. It comes in two basic versions: LMV5-1, which integrates linkage control, flame safeguard, and modulating-PID control and controls up to three actuators at once; and LMV5-2, which gives you the option of O2 trim, VFD control, or both and can control up to five actuators at once to yield maximum efficiency in low-NOx burners.