The Emerson Climate-White Rodgers 8A18Z-2 Evaporative-Cooling Thermostat is used to control indoor temperature well for evaporative cooling systems. The thermostat monitors the indoor temperature and starts the cooling unit when it is needed. The thermostat controls the fan and pump of the cooler by using a low-voltage system set to specific temperature levels. Designed for use with residential and light commercial HVAC systems that have evaporative coolers, it provides energy efficiency and accurate temperature control. The benefits are lower energy use, longer equipment life, and more comfort to the thermostat’s ability to manage the system without extra cycling.