The Hog Hearth MSU (Master Sensor Unit) is designed to regulate the temperature of all Hog Hearth heat mats in a farrowing room. Embedding or surface mounting the temperature probe and isolating the MSU control mat from the animals provides an unaffected temperature signal to the master control. This system allows your Hog Hearth mats to operate efficiently, providing an even, consistent temperature and ensures all piglets are receiving the right amount of heat at the right time