Most reviews for this listing are for the HS200 Kasa Smart Switch. This is NOT that product. This product is actually the newly released HS220 Smart Dimmer. Yes, it is a dimmer and works great with the Kasa app and Amazon Alexa. Very easy installation and setup but you must have a neutral wire at the switch location for this to work. Alexa integration is also a snap to configure. Be advised that this is only rated at 300W incandescent which is pretty low if controlling a bank of incandescent ceiling can lights. LED is a hefty 150W though. I also have a TP-Link Smart Switch (HS200) and 2 Smart Plugs (HS105) that work equally as well.
