Kasa Smart Plug Ultra Mini: full spec sheet and buying guide

Updated July 29, 2026 · Category: Smart home · Content based on official specifications and public Amazon buyer ratings, not a hands-on test.

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The Kasa Smart Plug Ultra Mini is a compact WiFi smart plug, designed to automate the appliances you already own without replacing them. This page summarizes its main features based on its official spec sheet and public buyer ratings on Amazon.

★ 4.5/5 on Amazon (40.442 ratings)

Voice control with Alexa and Google Home, no additional hub required.

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Ratings and prices are as shown on Amazon at the time this article was published and may have changed. Affiliate disclosure.

Voice control and app

According to its spec sheet, it works with Amazon Alexa and Google Assistant for voice control of appliances, and it can also be turned on/off from anywhere with the Kasa app, with no additional hub required. It only needs 2.4 GHz WiFi.

Scheduling

It lets you set schedules or countdown timers so the plug automatically turns appliances like lamps, fans, humidifiers, or Christmas lights on or off.

Reliability

The manufacturer states Kasa has over 6 million users and was PCMag's "Readers' Choice" in 2020. It carries UL safety certification and a 2-year warranty.

Strengths based on its spec sheet

No additional hub required
Compatible with Alexa and Google Home
Scheduling by time or countdown timer
UL certification and 2-year warranty

What to consider before buying

Only works with 2.4 GHz WiFi, not 5 GHz
Requires the Kasa app for initial setup
Being "mini," check the dimensions if you have outlets close together on the wall

Want to compare this product with other smart home options? Check out our smart home buying guide.

Who is it ideal for?

Based on its spec sheet, it's a good fit for anyone starting out in smart home tech who wants something simple and cheap, without buying an additional hub or replacing the appliances they already own.

Who is it NOT the best option for?

If your WiFi network is 5 GHz only or you have coverage issues on 2.4 GHz, check compatibility before buying.

Frequently asked questions

Does it need an additional hub or bridge?

No, according to its spec sheet it connects directly to your home WiFi.

Does it work with Google Home?

Yes, it's compatible with Amazon Alexa and Google Assistant.

Can you set a schedule?

Yes, the Kasa app lets you create schedules and automatic countdown timers.

Does the Kasa Smart Plug Ultra Mini sound like the right fit for you?

See current price on Amazon