Create the right ambiance at home with the Smart LED Dimmer. With this Smart LED Dimmer, it is possible to dim normal dimmable LED lamps via your smartphone/tablet. Of course, dimming with this dimmer can also be done manually. Note: For smart lamps, this dimmer is not necessary / suitable. You connect the dimmer in the place of your current switch. Via WIFI you connect the Calex Smart LED built-in dimmer with the free app. Ideal for anyone who already has our normal XXL bulbs in their interior, but still wants to enjoy the conveniences that smart technologies have to offer. You can dim your normal lamps via the app, set timers and choose light plans. This dimmer also makes voice control possible for your normal dimmable LED lamps (via Google Assistant / Siri / Amazon Alexa). This Calex Smart Inbuilt Dimmer: - Makes dimming your non-intelligent lamps with smartphone/tablet possible, as well as manually - Makes non-smart bulbs programmable in the free Calex app - Makes non-smart bulbs controllable via voice control - Fits on almost every frame (with turn-switch) - Has a diameter of 70mm and depth of 24mm