A line voltage digital thermostat is a device that is used to control the temperature of a space. It is typically installed in a home or office and is connected to a heating or cooling system. The thermostat works by measuring the temperature of the space and then adjusting the system accordingly. It is designed to be both efficient and accurate, allowing users to set a desired temperature and have the system maintain it. Line voltage digital thermostats are a great way to save energy and money, as they can be programmed to turn the system off when the desired temperature is reached. They are also easy to install and use, making them a popular choice for many homeowners.