This Burnham Commercial safety device is designed to monitor the water level within a boiler system. The unit functions by shutting off the fuel or heat source if the water level in the system drops below a certain point, thus preventing potential damage or dangerous conditions that could arise from a dry-fired boiler. It is equipped with an automatic reset feature and a manual reset button for added convenience and safety. The device operates using a probe-type sensor, which offers reliable performance and durability. It is compatible with various models of Burnham Commercial boilers, making it a versatile addition to any boiler system.