The Treatlife Smart Dimmer Switch, Neutral Wire Required, 2 Point 4Ghz Wi-Fi Product Features 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. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!