The Liebert 153210G4S 4-Wire Thermostat is a temperature control device designed for use with Liebert Mini-Mate II precision cooling systems and other compatible HVAC equipment in data centers, telecommunications rooms, and critical environmental applications. It monitors room temperature and sends signals to the connected unit to regulate heating or cooling operation, helping maintai... https://www.partshnc.com/153210g4s-liebert-minimate-ii4wiretstat