Treatlife Smart Dimmer Switch, Neutral Wire Required, 2 Point 4Ghz Wi-Fi Light Product Details Easy Installation: Neutral Wire is required, no hub needed, standard wall plate size, the smart switch supports up to 150W LED/CFL or 400W incandescent bulbs, Dimmable bulb only, 2.4G Wi-Fi only (NOT 5G); single-pole use only (NOT 3-way). Step-by-step instructions will guide you through the wiring process. 0% - 100% Dimming: The smart dimmer switch can smoothly adjust the brightness from 1% to 100%, it meets the atmosphere needs of special moments in family life. Dim to a gentle glow to enjoy a candlelight dinner with your families. Brightness memory function will remember and turn back on to the last light setting when powered off. APP Voice Control: This led dimmer switch Controls the light from anywhere and anytime by the Smart Life/Treatlife App. Light Switch works with Alexa and Google Assistant. The dimmer switches are easy to control the light with a voice command when your hands are not free, "Alexa, turn on the bedroom light. " Home Automation: Treatlife smart light switch creates schedules (timer or countdown) to automatically turn on and off the light based on everyday routines , It is great when you are on vacation to trick potential intruders. Also your family members can control the dimmer light switch by family sharing function. Reliable use Good Service: FCC Certified. Flame-retardant material and built-in overheat protection for added safety. Refer to the PDF attached below in Technical Specification for user manual. Any unexpected quality issues, please contact us in time to activate your warranty service, we always stand behind our customers. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.