The Leviton Decora DDMX1-BLZ is an in wall electronic dimmer, with built in 24 hour timer, countdown timer and on board Bluetooth. The dimmer supports incandescent as well as dimmable CFL and LED lighting. Bluetooth support allows control from your Android or iOs device from up to 30 feet away, and makes timer set up easier by using the free Leviton app. Just download the app, pair the device and use the app's graphical interface for the rest. Once you download the app, no Internet connection is needed to connect to the dimmer, control it or update the schedules. Controlled locally, the dimmer switch is well designed with a paddle control for on and off, and a dimmer control on the side so dim levels can be easily maintained or changed.