The QE A/C digital thermostats help make it easy for you to save energy by offering settings to regulate your home’s temperature in both cool and hot climates while at home or away. Your thermostat will pay for itself during its first season of use and will provide you with years of reliable service. QE offers both programmable and non-programmable versions which feature compact designs, Fahrenheit or Celsius scale, and color-coded wiring for easy installation. All QE A/C digital thermostats include English and Spanish instructions and are individually boxed. 24 V / 60 HZ.