The Bromic Heating Tungsten Smart-Heat Wireless On/Off receiver in Gray is a stylish and functional dimmer switch designed for outdoor use. This rectangle-shaped control unit requires assembly and includes a wall switch and control box for easy installation. It operates on a voltage range of 110 - 230 V and offers wireless on/off control for added convenience. Made of durable plastic, this model (2620275/BH3130010) is perfect for patio heaters and creating a comfortable outdoor living space.