A non-programmable thermostat is a temperature-regulating device that lacks advanced programming features. It comprises sensors that detect temperature changes, a display that indicates current and set temperatures, and actuators that respond to temperature deviations. Non-programmable thermostats come in various types, such as mechanical, digital, and electronic, with each offering distinct temperature control mechanisms. Proper installation and maintenance are crucial for optimal performance. While not offering scheduling options like programmable thermostats, non-programmable models maintain a constant temperature, potentially contributing to energy savings. Advanced models may offer home automation connectivity, allowing remote temperature control for added convenience.