Neutral Wire Required: Please make sure your electric box has a neutral wire(color in white) before purchasing. If you are not sure please take a photo of the inner part of your electric box and send to support@meross.com. We can check it for you timely. Remote and Voice Control: Control your light from anywhere anytime. ONLY supports Meross app. Compatible with Alexa Google Assistant and SmartThings simply use your voice command to control it. All data is securely transmitted and stored using AWS servers in US. Easy to Install: 15 mins installation. Only for single pole installation. Fits for your exsiting 1/2/3/4 gang standard size Decora/GFCI faceplate. Works with the 2.4G WiFi only does NOT support 5G WiFi no hub required. Schedule and Timmer Setting: You can schedule it to turn on and off automatically. Added benefit of saving energy when lights are not needed or are left on by accident. Support sunrise and sunset setting. Reliable Connection: Be annoyed by frequent offline of other smart switches? Meross smart switch powered by Mediatek IoT chipset is capable of longer WiFi connection range and lower offline rate than others.