Works with Alexa for voice control (Alexa device sold separately)Wemo Light Switch seamlessly replaces your old wall light switch. Control you lights from Wemo Light Switch on the wall, the Wemo app, and even your voice with both Amazon Alexa and Google AssistantSet schedules and timers. Set porch light to turn on at sunset. Schedule ceiling fans to turn before you arrive home. Sync on and off times to sunrise and sunset, and moreWorks with Amazon Alexa and Google Assistant. Pair Wemo Light Switch with Amazon Alexa or Google Assistant built-in devices like Google Home to turn your lights on or off with just the power of your voiceRandomize Lights to Protect Your Home. Enable 'Away Mode' when you're away and Wemo will turn lights on and off randomly. Electrical Ration: 120V/15A/60Hz/1800WWorks with Nest to detect when you're home or away. Use Nest compatibility to turn a ceiling fan off when the house is empty, or have your lights switch on when you come homeNOTE: works with any one-way connection light switch (not compatible with 3-way) and requires a neutral wire