The Caseta Smart Fan Speed Control is a white fan speed controller designed for pull chain fans and single pole ceiling fans. It is compatible with Lutron brand fans and has a corded power source. Made of plastic with a 4-inch diameter and 6-inch length, this energy-efficient device is suitable for indoor use. It features a 3-way connector and a voltage of 3.8V, with an output voltage of 120V. The product comes with a 1-year manufacturer warranty and is designed to be energy-efficient, making it a convenient and practical choice for controlling fan speeds in your home.