This listing is for a used Source 1 S1-THEC11NS digital thermostat. This model is designed for straightforward temperature control, offering a non-programmable 1 Heat / 1 Cool configuration. It is suitable for various HVAC systems requiring basic yet dependable operation. Experience consistent temperature management with this Source 1 S1-THEC11NS thermostat. Its digital display provides clear readings, allowing for easy adjustment of your heating and cooling settings. This unit focuses on simplicity, providing essential climate control without complex programming features, making it a practical choice for everyday use. This Source 1 S1-THEC11NS thermostat is a used item. It is ready for installation to help you maintain a comfortable indoor environment. Verify integration with your existing HVAC system before purchase.