A smart thermostat line voltage is a type of thermostat that uses a low voltage signal to control the temperature of a space. This type of thermostat is designed to be more energy efficient than traditional thermostats, as it can be programmed to adjust the temperature of a space based on the user’s preferences. It also has the ability to detect changes in the environment, such as the temperature outside, and adjust the temperature accordingly. Smart thermostats are also capable of monitoring energy usage and providing feedback to the user on how to reduce energy consumption. This type of thermostat is becoming increasingly popular in homes and businesses as it provides an easy and cost-effective way to save energy and money.