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The best outdoor smart plugs for string lights and more

By the Plugged-In Home editors · Updated

Researched, not lab-tested · We may earn a commission from links on this page. How we choose

Quick answer

The Tapo P400M is the outdoor smart plug to get: two weatherproof outlets you control separately, an IP65 rating and Matter, so it works with Apple Home, Alexa, Google Home and SmartThings. To dim string lights, get the Tapo P430M instead. Kasa homes can pick the EP40M, which is similar with a slightly lower IP64 rating.

Key takeaways
  • Look for an IP64 rating or better, and cover unused outlets.
  • Two outlets you control separately handle lights and a fountain from one plug.
  • Matter means it works in any major smart home app.
  • Check your Wi-Fi outside first: these plugs use 2.4 GHz only.

Best outdoor smart plug: Tapo Smart Outdoor Plug P400M

The P400M has two outlets you can switch and schedule separately, an IP65 rating and an operating range of -4°F to 122°F (Tapo). It’s Matter certified, so it sets up in Apple Home, Alexa, Google Home or SmartThings. Tom’s Guide (March 2026) and Matter Alpha (October 2024) both rank it first. There’s no energy monitoring, and Tom’s Guide found the cord short.

What we like
  • Two outlets, each controlled on its own
  • Matter: works with Apple Home, Alexa, Google Home and SmartThings
  • IP65, rated from -4°F to 122°F
Watch out for
  • No energy monitoring
  • 2.4 GHz Wi-Fi only

Skip it if you want to dim string lights. The Tapo P430M is the dimmer version.

Best outdoor dimmer plug: Tapo Outdoor Smart Dimmer Plug P430M

The P430M dims plug-in string and landscape lights and tracks their energy use in the Tapo app, with an IP65 rating and Matter (Tapo). It has one outlet and is rated for up to 150 W of LED or 300 W of incandescent lighting, so use it only for dimmable lights, never for pumps or heaters. Matter Alpha notes it’s unclear whether the energy data shows up in Matter apps.

Best outdoor dimmer plug
Tapo Outdoor Smart Dimmer Plug P430M
8.3/10Outlets 1, dimmable
What we like
  • Dims plug-in outdoor lights
  • Energy monitoring in the Tapo app
  • Matter certified, IP65
Watch out for
  • One outlet
  • Dimmable lights only: up to 150 W LED or 300 W incandescent

Skip it if you need to power a pump, heater or anything that isn’t a dimmable light.

Best outdoor plug for Kasa homes: Kasa Smart Outdoor Plug EP40M

Kasa’s EP40M has two individually controlled outlets, Matter and the same -4°F to 122°F range, with an IP64 rating (Kasa). It makes most sense if you already use the Kasa app indoors, for example with our favorite indoor plug, the Kasa KP125M.

Best outdoor plug for Kasa homes
Kasa Smart Outdoor Plug EP40M
8.4/10Outlets 2, separately controlled
What we like
  • Two outlets with separate schedules
  • Matter certified
  • Sits in the Kasa app next to your indoor Kasa plugs
Watch out for
  • IP64, a step below the Tapo P400M’s IP65
  • No energy monitoring

Skip it if you don’t already use Kasa. The Tapo P400M has a higher weather rating for about the same price.

Setting one up outside

From Tapo’s instructions for the P400M, plus two tips of ours:

  1. 1Plug it in with the outlets facing down, so water can’t get in.
  2. 2Keep it at least 12 inches off the ground, and secure it with the clamp provided.
  3. 3Keep the weatherproof cover closed on any outlet you’re not using.
  4. 4Check your Wi-Fi at the spot with your phone first. If setup fails, our 2.4 GHz fix usually solves it.
  5. 5Put the lights on a sunset schedule: see how to turn lights on at sunset.

What about Ring?

Ring’s outdoor plug needs a Ring Bridge or a compatible Echo to work (Tom’s Guide), so it only makes sense in a home already built around Ring.

Where these facts come from

We haven’t tested these plugs ourselves. Specs come from the makers; the rankings and the caveats come from published reviews, checked on September 29, 2026:

Side by side

Product
Top pick
Tapo P400M
Tapo P430M
Kasa EP40M
Our score8.7/108.3/108.4/10
Best forBest outdoor smart plugBest outdoor dimmer plugBest outdoor plug for Kasa homes
Outlets2, separately controlled1, dimmable2, separately controlled
Weather ratingIP65IP65IP64
Energy monitoringNoYesNo
Typical priceUsually under $30Usually under $40Usually under $40
Where to buyCheck price for Tapo Smart Outdoor Plug P400M (opens in a new tab)Check price for Tapo Outdoor Smart Dimmer Plug P430M (opens in a new tab)Check price for Kasa Smart Outdoor Plug EP40M (opens in a new tab)

Frequently asked questions

Can an outdoor smart plug stay out in the rain?

Yes, if it’s rated for it and installed as the maker says. Tapo tells you to keep the P400M face down, at least 12 inches off the ground, and covered on any outlet you’re not using.

Do outdoor smart plugs work in winter?

All three are rated down to -4°F (-20°C).

Do I need a hub?

No. They connect straight to 2.4 GHz Wi-Fi and work in the Tapo or Kasa app. To use them through Matter in Apple Home, Alexa, Google Home or SmartThings, you need that platform’s Matter controller, such as a recent smart speaker.

Bottom line
Top pickTapo Smart Outdoor Plug P400M

Two weatherproof outlets you control separately, with Matter for every major home app.

If that’s not you: Tapo P430M, best outdoor dimmer plug · Kasa EP40M, best outdoor plug for Kasa homes

Filed under: Smart plugs · Outdoor · Matter · Tapo · Kasa

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