The CYNC Smart Paddle Dimmer Light Switch adds smart bulb functionality to traditional light bulbs, enabling out-of-home control, scheduling and scene-setting for your lights. The smart WiFi switch features a contemporary style that complements traditional paddle switches. Its smooth dimming range is compatible with most dimmable LED and incandescent bulbs. Get more from your CYNC switch by pairing with CYNC smart bulbs. Install CYNC smart bulbs on the same circuit to keep schedules and voice control available even when the switch is turned off. Pair with CYNC bulbs in other fixtures and control all your lights from one wall switch. Designed for single-pole, 3-way or 4-way circuits, one CYNC Smart Paddle Dimmer Switch makes an entire multi-way circuit smart—no additional smart switches required. Create multi-way connections using the included traveler wire and traditional switches or virtual 3-way connections using multiple CYNC Smart Switches, including switches on different circuits. Install CYNC Smart Switches on your own with easy, DIY setup or with the help of a professional in newer homes built after 1980 using 2.4GHz WiFi. With Matter compatibility, connect to Amazon Alexa, Google Assistant, Apple HomeKit and Samsung SmartThings apps—no hub needed. Neutral wire--usually a white or gray wire--is required.