TP-Link Kasa HS200 vs TP-Link Kasa HS220

For general on/off lighting, the TP-Link Kasa HS200 wins, since it handles more resistive load, up to 600W against the HS220's 300W. The TP-Link Kasa HS220 costs less and is the one to pick if dimming, not raw load capacity, is what you actually need.

The TP-Link Kasa HS200 is a plain on/off switch, while the TP-Link Kasa HS220 is a dimmer with an app-based calibration for smooth, flicker-free brightness control and adjustable fade on and fade off speeds. That's why the HS200 can handle more wattage: dimming circuitry trades load headroom for brightness control.

Yes. Both the TP-Link Kasa HS200 and the TP-Link Kasa HS220 require a neutral wire in the switch box and are single pole only, so neither works in a 3-way circuit or a no-neutral box.

Yes. Both connect straight to 2.4 GHz Wi-Fi with no hub, and both work with Alexa, Google Home, Samsung SmartThings and Home Assistant. Neither supports Apple HomeKit or Matter.

Anyone switching a bright, non-dimmable fixture, like a garage, workshop or outdoor light, that benefits from the higher 600W resistive load rating and doesn't need brightness control.

Anyone who wants to dim a light rather than just turn it on and off, and is fine with a lower wattage ceiling in exchange for smooth, flicker-free brightness adjustment.