Dimmer functionality, with Zwave compatibility. This is the best of the in-wall options, in my humble opinion.
Please note, this requires a neutral wire.
Requires a Z-Wave certified gateway. Compatible with the following Z-Wave certified Hubs: SmartThings, Wink, ADT Pulse, Trane, Vivint, Nexia, Honeywell, HomeSeer, Harmony Home Hub Extender, Vera, Connect and Iris.