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Kasa KP405

Kasa / KP405

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Does the Kasa KP405 work with HomeKit, Alexa, and Google Home?

The Kasa KP405 is for outdoor lights only.

This IP64 plug-in dimmer is rated for 4 A, 300 W incandescent or 150 W LED. It suits Google Home and Alexa users, with native support through the maker's cloud. Home Assistant users reach it through an integration (the maker's cloud).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Unknown
Unknown
Google Home
Yes[1]
Wi-Fi cloud, native
Alexa
Yes[1]
Wi-Fi cloud, native
SmartThings
Unknown
Unknown
Home Assistant
Yes[2]
Wi-Fi cloud, via tplink

Key facts

Kasa KP405 facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[1][3]
TypeOutdoor plugs[1]
Matterunknown
HomeKitunknown
Energy monitoringunknown
Outletsunknown
Max load300 W incandescent, 150 W LED (MLV). 4 A maximum.[1]
ConnectivityWi-Fi 2.4 GHz[1]
Releasedunknown
Weather ratingIP64[1]

Integration paths

How the Kasa KP405 connects

1 pathHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Wi-Fi cloud2.4 GHz Wi-Fi network, Kasa Smart app and account[1]unknownunknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the Kasa KP405

2 routesHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantNative (local)[2]tplinkWi-Fi cloud
  • Quality: Platinum[2]
  • IoT class: Local Polling[2]
  • Works with Home Assistant: Not certified[2]
Model namedNone stated
HomeyOfficial app (cloud)[4]com.tplink.kasaWi-Fi cloud
  • App: Official[4]
  • Runs on: Homey Pro, Homey Cloud[4]
Model namedNone stated
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Cite this page

Kasa KP405. Smart Home Canon. https://smarthomecanon.com/devices/kasa-kp405. Last checked 2026-10-20.

Sources

  1. [1]
    MFRkasasmart.com / Kasa Smart Outdoor Dimmer Plug (KP405) - Kasa Smart US
    Accessed Back to text
  2. [2]
    DOChome-assistant.io / TP-Link Smart Home - Home Assistant integration
    Accessed Back to text
  3. [3]
    MFRkasasmart.com / Kasa Smart US: smart plugs listing
    Accessed Back to text
  4. [4]
    DOChomey.app / Homey App Store: TP-Link Kasa Smart
    Accessed Back to text