The Emerson M150 Mechanical Heat/Cool Thermostat is a white, wall-mounted thermostat designed for single-stage heating and cooling systems. It features a dial control style with an analog/mechanical design, making it easy to adjust. The thermostat operates on a low voltage power source and has one heat and one cool stage. With its temperature sensor technology and non-programmable design, this thermostat provides efficient heating and cooling control for your home.