Kasa Smart HS220-BL Dimmer Switch, Single-Pole, 1%–100% Dimming, Wi-Fi

If you want app and voice control for a single-pole light circuit, the Kasa Smart HS220-BL adds dimming and scheduling in a wall switch.

Set brightness anywhere from 1% to 100%, then use fade-on and fade-off transitions to make changes feel gradual.

It connects over 2.4 GHz Wi-Fi and works with the Kasa and Tapo apps, Alexa, Google Assistant, and Samsung SmartThings. A neutral wire is required.

Why it’s worth it

A standard on/off switch gives you one lighting level at the wall. The HS220-BL adds adjustable brightness, app control, and voice commands, so you can adapt a room’s lighting without changing the switch manually each time. Use a low setting for a relaxed evening, raise the brightness for everyday activities, or create schedules that turn lights on and off as part of your routine.

Fade-on and fade-off transitions soften the shift between dark and bright. Away Mode can switch lights on and off at random times while you’re out, and custom schedules let you set a predictable routine. You can also group smart devices for one-tap control. Customer feedback highlights the dimmer’s smooth operation and the app-guided setup, reports about connectivity are mixed.

At a glance

• Type: Single-pole smart dimmer switch
• Brightness range: 1%–100%
• Connectivity: 2.4 GHz Wi-Fi
• Control: Kasa or Tapo app, amazon Alexa, Google Assistant, and Samsung SmartThings
• Wiring: Neutral wire required
• Maximum wattage: 275 watts
• Color and material: Black polycarbonate
• Dimensions: 5.06 x 3.33 x 1.35 inches
• Certification: UL
• Included: Wall plate, wire nuts and screws, quick installation guide, and wire labels

Best use cases

This switch suits a single-pole lighting setup where adjustable brightness and smart control are useful in everyday routines. In a living room, for example, you can dim the lights for an evening at home, use a voice assistant to change the setting, or schedule lights to turn on at a chosen time. App access also makes it possible to control connected lights remotely.

Setup is guided through the Kasa or Tapo app. The switch needs a neutral wire and a 2.4 GHz Wi-Fi connection, if you’re unfamiliar with electrical wiring, consulting an electrician is recommended. Its single-pole design is the relevant choice for a circuit controlled from one switch location.

What to clarify

What wiring does the HS220-BL require? It is designed for single-pole wiring and requires a neutral wire. The app provides step-by-step setup guidance, and an electrician is recommended if you’re unfamiliar with electrical wiring.

Which apps and voice assistants can control it? You can use the Kasa or Tapo app, Amazon Alexa, Google Assistant, or Samsung SmartThings. The switch connects through 2.4 GHz Wi-Fi and does not require a hub.

Can it automate brightness and on/off times? Yes. Set a brightness level from 1% to 100%, create schedules, use fade-on and fade-off transitions, or enable Away Mode to switch lights on and off at random times.

When it makes sense

Choose the HS220-BL when you want more than basic wall-switch control for a compatible single-pole circuit. Its adjustable dimming, app and voice access, and scheduling bring practical control to daily lighting, while fade transitions and Away Mode add options for setting a room’s atmosphere and managing lights while you’re away.