Upgraded to Full Environmental Control: Unlike the previous version that only supported grow lights, the new iControl connects to fans, humidifiers, dehumidifiers, and more—enabling complete grow environment automation. Smart Temperature & Humidity Strategy: Automatically adjusts connected devices based on real-time temperature, humidity, and VPD monitoring to maintain ideal growing conditions. Stage-Based Grow Automation: Customize light and climate settings for each plant stage—seedling, veg, flower—and the system will auto-switch modes based on your timeline. Supports Advanced Sensor Integration: Compatible with optional PPFD, soil moisture, and CO₂ sensors (sold separately) for precise, data-driven automation and better plant health. App Control, Logs & Smart Alerts: Monitor and control remotely with the iControl app. Get real-time data logs and instant alerts for disconnections or extreme conditions. Package include: 1x iControl 1x Temp/Humid/Light 3-in-1 Sensor 1x Power Supply 4x RJ12 T-Shape Splitter 3 x 0.25m (0.82ft) RJ12 Cord 5 x 2.5m (8.2ft) RJ12 Cord 2x Hanging Kits Note: This  iControl model with upgraded features and a new system design will make your cultivation easy. It is not compatible with previous Controller43 controllers or older Mars Hydro iHub-4ac power strips. To enjoy the new environmental control functions, a new controller and compatible devices are required. *Mars Hydro Certified Refurbished Products have undergone rigorous testing and assessment to ensure they meet  quality standards, allowing you to make purchases at affordable prices. However, please note that Refurbished Products  do not enjoy the same warranty policy as new products, the warranty period for the LED grow light is one year. Once sold,  returns or exchanges are not supported unless there are quality-related issues.