Input Power: 1.0--4.0kW Voltage: 220V~ Accessory: installing bracket, thermostat with remote Specification: see the products introduction 1. No light: far infrared ray is not visible, will not affect rest at night 2. No noise: through radiant to warming, no need to use fan motor, no noise pollution 3. Good physical therapy: radiation wavelength controls in 4-14 micron, health cares for human body.