Line Volt Mechanical Tstat: Electric CoolingLine Volt Mechanical Tstat: Electric Cooling Analog thermostats are the most basic line voltage thermostat option and use a dial to set the temperature of a space. These mechanical thermostats are often used in residential and commercial applications. They're nonprogrammable, so the temperature setting stays the same until it's readjusted. Brand DAYTON Application Cool Only Compatible System Type Electric Cooling Control Type Exposed Dial Differential