Multi-Input Smart Controller with Wi-Fi & Bluetooth - Shelly Plus i4 is a 4-input smart controller designed for Wi-Fi and Bluetooth connectivity. Its ideal for use with the Shelly Wall Switch for Smart Relays, offering up to three distinct functions per button. It can also act as a Wi-Fi range extender, enhancing network coverage for your smart home. Convenient Manual Control Anytime - Forget to turn off the lights and don't have your phone nearby? Shelly Plus i4 allows instant, manual control over your connected Shelly devices. Enjoy easy access to home automation right at your fingertips, no need to reach for your phone. Advanced Smart Bulb Integration - Control and customize smart lighting across brands like Shelly Wi-Fi bulbs, Philips Hue, and more. Shelly Plus i4 supports color adjustment and dimming through pre-set scripts or webhooks, giving you full flexibility over your lighting environment.