Industry-leading Valve Operator: Easy DIY no-plumber-required installation. High torque motor for years of dependable service. Compatible with standard ball valves, pipe size ½, ¾, 1, 1 ¼ inch YoLink Smart Valve Controller: Combined with the Valve Operator, makes your water shut off smart. Know and control the status of your water valve using the convenient YoLink app, any time, from anywhere (YoLink Hub is REQUIRED). No Wi-Fi, No Internet, No Power? No Problem! Only YoLink's unique Control device-to-device pairing offers operation through the loss of Wi-Fi, internet even AC power! Add YoLink smart water leak sensors to complete your AUTOMATIC YoLink Smart Water Solution. Start Smart! Don't buy a standalone water leak alarm if you can instead start the foundation of your new smart home! The Hub is compatible with a growing ecosystem of smart devices, including home security, smart locks, lighting & power control, temperature, humidity monitoring, thermostat, sprinkler controllers and more! Scalable, from Single-Family to High-Rise Condos, and powered by LoRa, YoLink offers industry-leading long-range (up to ¼ mile!) and capacity (300+ devices per Hub), add as many Hubs as needed, to expand capacity and range! Works With Alexa & Google Voice Assistants: Supercharge your YoLink system by adding the YoLink skill to Alexa or Google Assistant. Control your YoLink devices by voice command (“Alexa, turn off the valve” – “OK!”) and control your YoLink devices as part of routines/automation that may include other, third-party, smart devices integrated with Alexa/Google. REQUIREMENTS, COMPATIBILITY & PACKAGE CONTENTS: YOLINK HUB IS REQUIRED! Not included; Please search B07TQLKQLJ for the Hub. PACKAGE CONTENTS: (1) YoLink X3 Water Valve Controller, (1) EVO Valve Operator, (1) Quick Start Guide