The Ring Bridge is required to group Ring Smart Lights together and receive notifications whenever motion is detected. It also pairs your Ring Smart Lights with other Ring Smart Lights, Ring doorbells and cameras, and select Alexa-enabled devices. *One Ring Bridge supported per household. Supports approximately 50 Ring Smart Lighting devices, including Motion Sensors (dependent on usage and other factors). The Ring Bridge lets Ring Smart Lights, Ring doorbells and cameras, and select Alexa-enabled devices talk to each other and work better together. If one Ring Bridge-enabled device detects motion, it can turn on your Ring Smart Lights, Ring doorbells and cameras, giving your Ring of Security endless combinations. Simply connect the Ring Bridge to the Ring App for even smarter home security. Then use the Ring App to easily synchronize your Ring Smart Lights and Ring doorbells and cameras. Link Ring Smart Lights to the Ring Bridge and connect with select Alexa-enabled devices to activate Ring Smart Lights and adjust settings at the sound of your voice. Plus, Alexa will let you know when motion is detected, so you’ll never miss a thing. Group Ring Smart Lights together to turn them all on whenever motion is detected. If one light detects something, it can brighten up a small pathway or make your whole yard shine. Connect Ring Smart Lights to Ring doorbells and cameras to see what’s happening whenever your lights detect motion. Now you’ll be ready to view activity even earlier than before. Link Ring Smart Lights to select Alexa-enabled devices to activate lighting and adjust settings at the sound of your voice. Want to turn on the backyard lights? Just ask Alexa. Includes: Ring Bridge USB Power Supply and Cable User Manual Security Sticker Protection and Warranty: Purchases are protected by a 1-year manufacturer’s warranty on parts. If your Ring product ever gets stolen, Ring’s Lifetime Purchase Protection will replace it for free! Please contact Ring directly for support and warranty needs. Website: https://support.ring.com/hc/en-us Email: help@ring.com Phone: 800-656-1918