Neutral wire required, standard wall plate size; No need to understand complex wiring and circuit configurations, this dimmer light switch is easy to connect the devices; Incandescent bulbs: max 300 W, LED/CFL bulbs: max 150 W. Our smart switch can control to turn on/off electronic devices anytime, anywhere with smartph1 (compatible with Android and iOS); supporting Apps: Amazon Alexa or Google Assistant; requires 2.4 GHz WiFi connection. Just use Amazon Alexa or Google Assistant to control the lights in your home via voice commands, enjoying hands-free convenience; the dimmer switches for LED lights are perfect for when your hands are busy or when entering a dark room. DEWENWILS indoor lighting dimmer supports to add lighting schedule to automatically turn on and off lights at your desired times, meets nighttime or early morning needs and provides a more intelligent setup. FCC and ETL listed ensures quality and safety; the wall dimmer allows you to experience more convenient, safe, and energy-saving life, particularly benefits the elderly and those with limited mobility. Color: WHITE. Material: PVC.