Venstar T7850 Colortouch 7 Day Programmable Thermostat with Built in Wifi, Works with Alexa Works with Alexa for voice control (Alexa device sold separately). Provides the best dimming performance for LED bulbs. Tested and recommended for use with over 1,000 bulbs (for recommended LEDs, please see "Technical Specification") Works with up to 100W of dimmable LED/CFL or 300W incandescent/halogen bulbs Lamp Dimmer simply plugs into a standard outlet and can be used with up to two lamps Dimmer controls up to 17 bulbs per circuit (based on 8.5W LED bulbs, 60W incandescent equivalent) Turns lights on/off or raise/lower to adjust brightness using included Pico remote Connects with more leading smart home brands (including Amazon Alexa, Apple HomeKit, the Google Assistant, Nest, Serena shades, and Sonos) than any other leading smart lighting control brand (Smart Bridge requried) 7-Day programmable, Auto-changeover Built In Wifi To connect to your smart phone Or Computer 4 State Heat 2 Stage Cooling