case of 2 C Smart Switches Add convenience with your WiFi Light Switches: Get convenience and comfort with enhanced functionality like out of home control and scheduling, so you never come home to a dark house Easy to install on your own or with the help of a professional. Works for newer homes built after the 1980s and requires a neutral and ground wire and 2.4GHz WiFi to enable smart control Alexa and Google Home Compatible (devices sold separately): Using the switch's built-in WiFi, connect to a compatible voice assistant for hands-free voice control Set schedules and save energy: Set a schedule for your lights to turn off when you aren't home so you can save energy and money Minimum Wattage Requirement: Requires a 15-Watt minimum on the switch's circuit (use the included bulb adaptor for medium base bulbs if less than 15-watts