The Caseta Wireless In-Wall ELV Plus Dimmer communicates with Radio Powr Savr sensors and Pico remote through radio frequency (RF). Neutral wire connection is required for all load types. Works with up to 500 watts of incandescent, halogen, or electronic low-voltage, 400 watts of magnetic low-voltage, and 250 watts of dimmable LED/CFL. Features a user defined one-touch preset (favorite) button. Works with Lutron Hi-Lume 1 percent 2-wire LED drivers (forward-phase only) and power interfaces (PHPM and GRX-TVI). Compatible with Lutron Smart Bridge which allows you to use your iPhone or iPad to remotely control lighting. Available in gloss finishes. Designer wall plate sold separately.