A 4-outlet thermostat typically refers to a thermostat with multiple outlets or zones that can control the temperature for different devices or areas. These thermostats are often used to manage heating and cooling devices such as space heaters, fans, or other temperature-sensitive equipment in different rooms or sections of a home or business. If you're looking for a specific product or need to control multiple devices with separate temperature zones, some smart thermostats or programmable ones may support multiple outlets, allowing you to manage different devices based on the temperature in each zone. Let me know if you're looking for recommendations or additional details!