Accurate, Dependable Protection for All Boiler Types The Taco Low Water Cutoff provides accurate and dependable protection for all types of boilers, from small residential hot water boilers to large industrial steam units. This probe-style Low Water Cutoff features patented DualVision Technology, external LED’s and simplified wiring for easy installation and testing and automatic, manual reset mode and are available in 24VAC or 120VAC models. The Taco Low Water Cutoff can act as either the primary or secondary low water cutoff on low-pressure steam boilers, the primary limit control on hot water boilers or to protect pumps from running dry in condensate receiver tank applications. The Low Water Cutoff can also activate alarm systems or automatic water feeders.