This is the small remote that comes in the dimmer light switch. Easy to install if you know smart phone apps. Will need a bridge to your wifi network to start so that these and other devices communicate within the Caseta (and other) smart switch families. The initial kit sells for $80- $100, and devices like these are often add-ons. My last project for some kitchen lights would have required breaking sheet rock, snaking cables, repairing sheet rock, patching/finishing and final painting if I had not used this system. Using the remote and replacing a double switch cover with a triple (just a few dollars), I was able to add the equivalent of a three-way switch on the other side of the kitchen. This is actually better functionality too - both switches are able to turn the lights on and off or dim them. The Pico remote also has a center button so you can set a commonly used dim setting. Traditional two or three way switches can only dim on one end and only switch on/off on the other end (that means no dimming in on the other switch). This system allows as many remotes as you like, AND they have a trim feature that you can view on the Web (it isn't in the enclosure instructions which I think it should be), so you can trim different kinds of modern LED bulbs to get them really dim as opposed to the often 'still on a bit" annoying feature when you try to dim then really low. Great product - will be buying more and replacing my Wemo switches that can't dim.