The Leviton Decora Smart Wi-Fi 2nd Fan Speed Controller with the My Leviton app provides 4-speeds plus on/off control and works with Hey Google, Amazon Alexa, or HomeKit/Apple Siri for voice control. With the My Leviton app you can configure fans to turn ON/OFF and adjust speeds to circulate the air at scheduled times. Adjust minimum and maximum fan speed settings. Choose a preset fan speed when turned on or optionally have the fan always turn on at the last speed. Use the auto-shutoff feature to act as a countdown timer. The My Leviton app is also ideal in situations where it is impractical to use the pull-chain to control the fan such as high up in a large room where the fan may be out of reach. Add 3-way/multi-location control by pairing with a wireless DAWDC Anywhere Dimmer Companion, DAWSC Anywhere Switch Companions (no wiring required) or a wired DD00R Dimmer Companion or DD0SR Switch Companion. Compatible with DDKIT color change kits: White, Ivory, Light Almond, Grey, Black, Brown. For use with one or more ceiling paddle fans with split capacitor or shaded pole motors, not to exceed 1.5A maximum load. Not for use with exhaust type fans, lighting loads, or combined ceiling fan light kits. Once installed, use the built-in fan speed level buttons to set your fan to low, medium, high, or max speeds in addition to on/off control with the Decora rocker. Two-Year Limited Warranty.