ADJUSTABLE THERMOSTAT & 3 HEAT SETTINGS: This Charcoal Grey 2500W unit offers 3 great heat settings to choose between 1000W 1500W & 2500W and fully adjustable thermostat. Once set the unit will automatically switch off when your preferred temperature is reached and switch back on automatically when the temperature drops and repeats this until you manually switch the unit off. With Environmentally Friendly Oil offering quick heat up and slow cool down function saving you energy and money.