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Kasa EP40M

EP40M is useful for two outdoor lights that need different schedules, but it is ordinary value. We would keep a working one and consider it for a sheltered Wi-Fi installation; existing Thread users have a cheaper option in IKEA’s TOFSMYGGA.

Matter over Wi-FiBuying review
By Matterhome Editorial TeamEditorial lead JC Martinez
Kasa EP40M outdoor smart Wi-Fi plug

What we like

  • Separate schedules and physical buttons for both sockets
  • Wi-Fi control avoids buying Thread equipment
  • Existing Kasa devices can also appear in the Tapo app

What could be better

  • No dimming or energy measurement
  • Costs more than IKEA's US outdoor plug
  • Conflicting temperature guidance undermines its winter appeal

Two sockets with two different jobs

EP40M earns its place when outdoor lighting should not all follow the same routine. A porch decoration could switch off early while the main string lights stay on for an evening outside. Each socket has its own power button as well as separate app control, so the second outlet adds flexibility instead of merely duplicating the first.

The black housing hangs below the outlet, with a short attached lead and covers for unused sockets. That is reasonable beside a utility outlet, less appealing on a carefully finished patio wall. Positioning the box and both connected plugs deserves as much thought as choosing a schedule.

Useful convenience at an unexceptional price

IKEA TOFSMYGGA costs about $20 for its US two-outlet version, making it the more attractive starting point when suitable Thread hardware and coverage are already available. EP40M's 2.4 GHz Wi-Fi connection is its counterargument: no Kasa hub or new Thread equipment is required for the plug itself.

Kasa familiarity alone is a weak reason to pay more. Kasa devices can also be managed in Tapo, and Tapo TP25 covers the same two-zone switching job for about $30 at Best Buy. Neither brand name establishes better real-world Wi-Fi range.

EP40M also cannot dim bright string lights or measure their consumption. If softer light is the goal, Tapo P430M is a different proposition: one dimmed lighting outlet rather than two independently switched ones. Alexa users should also confirm separate-outlet behavior before buying EP40M specifically for two Matter voice controls.

Better for a sheltered position than a winter gamble

The IP64 enclosure resists splashes, but the unit needs a GFCI-protected outlet, sockets facing down and mounting clear of the ground. Its 15 A maximum is shared across both sockets. It is not two full-capacity power supplies, and the short input lead should not be extended with another extension cord.

We would skip it for a freezing or heavily exposed location until TP-Link confirms suitability: its winter marketing conflicts with the manual's 0°C lower operating limit. Buy it where those separate controls solve a real annoyance; keep an outdoor plug already doing the job.

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How it compares with other smart plugs

Ecosystem support shows what maker and platform documentation lists, not our own testing.

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Kasa EP40M compared with IKEA TOFSMYGGA Outdoor Plug, Tapo TP25, Tapo P430M
Kasa EP40M outdoor smart Wi-Fi plug
KasaEP40MThis review
IKEA TOFSMYGGA Outdoor Plug
IKEATOFSMYGGA Outdoor Plug
Tapo TP25 outdoor smart Wi-Fi plug
TapoTP25
Tapo P430M outdoor smart Wi-Fi dimmer plug
TapoP430M
Our takeEP40M is useful for two outdoor lights that need different schedules, but it is ordinary value.TOFSMYGGA is a good-value outdoor switch for two lighting jobs when Thread already reaches the patio.TP25 is a sensible way to buy two-zone outdoor Wi-Fi switching when its retail availability suits you.P430M is an appealing low-cost upgrade for outdoor lights that are already dimmable.
PriceNo price listed$19.99$29.99$23.99
ConnectionMatter over Wi-FiMatter over ThreadMatter over Wi-FiMatter over Wi-Fi
NeedsNo brand hub or Thread router requiredNeeds a Thread border routerNo brand hub or Thread router requiredNo brand hub or Thread router required
MarketsNorth AmericaNorth AmericaNorth AmericaNorth America
Launch2024202620232025
Works with
Apple HomeSupportedSupportedSupportedSupported
Google HomeSupportedSupportedSupportedSupported
AlexaLimitedSupportedLimitedSupported
SmartThingsSupportedSupportedSupportedSupported
Home AssistantSupportedSupportedSupportedSupported
HomeyNot listedSupportedNot listedNot listed

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