The Marley MD26 Double Line Break Line Voltage Thermostat is a programmable thermostat designed for use in home heating systems. Manufactured by House of Marley, this thermostat operates on line voltage and is suitable for controlling electric heating systems. It features a double line break design, providing precise temperature control and energy-saving programmable settings. This thermostat is ideal for maintaining a comfortable and efficient heating system in a home or other residential space.