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TP-Link

TP-Link Kasa Smart Plug KP115

  • Energy monitoring with real-time wattage display
  • Works with Alexa, Google Home, SmartThings
  • No hub required, direct Wi-Fi 2.4GHz connection
  • Timer and schedule automation in Kasa app
  • Compact design, does not block second outlet
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On this page

Is the TP-Link Kasa Smart Plug KP115 worth it?

Yes, for the right buyer. The TP-Link Kasa Smart Plug KP115 ranks #1 in our Best Smart Plugs 2026 list (best overall). Its biggest strength: kasa app is more polished and reliable than Amazon or Wemo apps. The main caveat: kasa is a separate app, Alexa/Google integration requires linking accounts.

Overview

What the TP-Link Kasa Smart Plug KP115 does well

What earns it a place here: kasa app is more polished and reliable than Amazon or Wemo apps and compact footprint does not block adjacent outlet on standard duplex. The tradeoff: kasa is a separate app, Alexa/Google integration requires linking accounts.

Specs that matter

Key features

  • Energy monitoring with real-time wattage display
  • Works with Alexa, Google Home, SmartThings
  • No hub required, direct Wi-Fi 2.4GHz connection
  • Timer and schedule automation in Kasa app
  • Compact design, does not block second outlet
The trade-offs

Pros & cons

Pros

  • Kasa app is more polished and reliable than Amazon or Wemo apps
  • Compact footprint does not block adjacent outlet on standard duplex
  • Works with Alexa, Google, and SmartThings, widest compatibility

Cons

  • Kasa is a separate app, Alexa/Google integration requires linking accounts
  • No HomeKit support, Apple users need a different option
  • 2.4GHz only, 5GHz Wi-Fi homes need to ensure 2.4GHz band is active
Fit check

Should you buy the TP-Link Kasa Smart Plug KP115?

Think twice if this matters to you

  • Kasa is a separate app, Alexa/Google integration requires linking accounts
  • No HomeKit support, Apple users need a different option
  • 2.4GHz only, 5GHz Wi-Fi homes need to ensure 2.4GHz band is active
Where it ranks

Featured in 1 best-of list

ListRank
Best Smart Plugs 2026· Best Overall#1 / 6
Cross-shop

Alternatives to the TP-Link Kasa Smart Plug KP115

Products ranked near it in our research, each better for a slightly different buyer.

Buying advice: smart home

  1. Pick devices compatible with the assistant you use. Matter support makes devices work across platforms.
  2. Wi-Fi devices are simple but add load to your router. Thread and Zigbee devices need a hub but are more responsive and battery-friendly.
  3. Devices that work locally keep running when the internet drops.
  4. Review microphone and camera settings and use two-factor sign-in on accounts.
  5. Smart devices depend on company servers and updates. Established brands are less likely to drop support.

Read the full guides

Answers

TP-Link Kasa Smart Plug KP115: common questions

Is the TP-Link Kasa Smart Plug KP115 worth buying?

Yes, for the right buyer. The TP-Link Kasa Smart Plug KP115 ranks #1 in our Best Smart Plugs 2026 list (best overall). Its biggest strength: kasa app is more polished and reliable than Amazon or Wemo apps. The main caveat: kasa is a separate app, Alexa/Google integration requires linking accounts.

Who is the TP-Link Kasa Smart Plug KP115 best for?

Based on our research it suits buyers who want the best overall package. It's ranked #1 of 6 in our Best Smart Plugs 2026 list.

What are the downsides of the TP-Link Kasa Smart Plug KP115?

The main trade-offs owners and reviewers point to: kasa is a separate app, Alexa/Google integration requires linking accounts; no HomeKit support, Apple users need a different option; 2.4GHz only, 5GHz Wi-Fi homes need to ensure 2.4GHz band is active.

What are the key features of the TP-Link Kasa Smart Plug KP115?

Energy monitoring with real-time wattage display, Works with Alexa, Google Home, SmartThings, No hub required, direct Wi-Fi 2.4GHz connection, Timer and schedule automation in Kasa app and Compact design, does not block second outlet.

What are the best alternatives to the TP-Link Kasa Smart Plug KP115?

Worth comparing: Amazon Smart Plug, TP-Link Kasa Smart Plug Mini EP10 and Leviton Decora Smart Plug (D215P, Matter). Each ranks near it in our research for a slightly different buyer.

Where can I buy the TP-Link Kasa Smart Plug KP115?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

Do smart lights need a hub to work?

It depends on the brand. Philips Hue requires a Hue Bridge hub (included in starter kits) for full functionality, without the hub, bulbs are uncontrollable if Wi-Fi goes down and cannot be automated. LIFX bulbs connect directly to Wi-Fi, no hub needed. Kasa bulbs (TP-Link) connect directly to Wi-Fi with no hub. Zigbee-based bulbs (most Hue, IKEA Tradfri) need a Zigbee hub or a smart home controller with Zigbee (Amazon Echo 4th Gen, SmartThings). Wi-Fi bulbs are simpler to set up but add to Wi-Fi network congestion. Zigbee bulbs are more reliable and responsive but require the hub investment.

Are smart bulbs compatible with all light fixtures?

Smart bulbs replace standard A19 (medium screw) bulbs in any fixture that accepts that base. They will not work in enclosed, airtight fixtures (sealed flush mounts), the heat buildup exceeds the rated temperature and dramatically shortens bulb lifespan. Most smart bulbs specify 'not for use in enclosed fixtures' in the specifications. For recessed cans: smart bulbs work if the can is open on the bottom (most are). For ceiling fan light kits: check that the socket is a standard A19 base, some fan kits use smaller candelabra (E12) bases that require a smaller smart bulb.

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