Quick answer: IP44 stops splashing rain under a covered patio, IP65 shrugs off a direct hose spray, and that gap in a two-letter rating matters more for an outdoor plug than almost anything else on the spec sheet; the Kasa EP40 is the best all-around pick at IP64, the Tapo P400M steps up to IP65 and adds Matter for Apple Home, and the Meross Outdoor Smart Plug trades some water resistance (IP44) for a third independently controlled outlet and native HomeKit support.
Bottom Line
Kasa EP40
Two independently controlled outlets, IP64 weather resistance, no hub required, and the most consistently proven track record of the three, reflected in a 4.6-star average from verified Amazon buyers. It only supports Alexa and Google Home, not Apple Home.
See Kasa EP40 →Tapo P400M
The highest water-resistance rating here (IP65) paired with Matter certification, so one plug shows up natively in Apple Home, Alexa, and Google Home instead of needing separate app integrations for each.
See Tapo P400M →Meross Outdoor Smart Plug
Three independently controlled outlets and native Apple HomeKit support without needing Matter at all. The tradeoff is IP44, the lowest water-resistance rating of the three, so it wants a covered mounting spot.
See Meross Outdoor Smart Plug →That's the short version. The full breakdown covers what the IP ratings mean in practice, how the three stack up feature by feature, and which one actually fits the spot on your house you're trying to power.
Outdoor Smart Plugs Compared
All three are built for outside, but they split on how exposed a spot they can handle, how many devices they run at once, and which smart home app they show up in.
| Feature | Kasa EP40 | Tapo P400M | Meross Outdoor Smart Plug |
|---|---|---|---|
| Price | $ | $ | $ |
| Outlets | 2, independently controlled | 2, independently controlled | 3, independently controlled |
| Weather rating | IP64 | IP65 | IP44 |
| Apple HomeKit | No | Yes, via Matter | Yes, native |
| Matter certified | No | Yes | No |
| Alexa | Yes | Yes | Yes |
| Google Home | Yes | Yes | Yes |
| SmartThings | No | No | Yes |
| Hub required for local control | No | No | No |
| Wi-Fi | 2.4GHz | 2.4GHz | 2.4GHz |
| Certification | ETL | ETL | FCC & ETL |
| Link | View | View | View |
Price tiers are approximate. $ = under $50, $$ = $50 to 150, $$$ = $150 to 300, $$$$ = over $300. Tap any link for the current Amazon price.
All three land in the same low price tier, so the real decision comes down to how exposed the mounting spot is, how many things you're plugging in, and which smart home app you already live in.
What the Weather Rating Actually Buys You
An IP rating is two numbers: the first covers dust and solid particles, the second covers water. For an outdoor plug, the water number is what matters. IP44 blocks splashing water from any direction, which is plenty for an outlet tucked under a porch roof or a deep eave. IP64 adds real dust-tightness and holds up against rain hitting the housing head-on in the open yard. IP65 goes a step further and tolerates a low-pressure water jet, which is the rating you want if a sprinkler head, a gutter downspout, or the spray from washing a car could hit the plug directly.
The mistake is buying the highest rating out of habit instead of matching it to the actual spot. The Meross Outdoor Smart Plug at IP44 is genuinely fine under a covered patio, and its third outlet is worth more there than a water rating you'll never test. Move that same plug to an exposed post at the edge of the driveway, and the Kasa EP40 or Tapo P400M is the safer call. For a broader look at indoor-focused options with more sizes and app polish, our general smart plug picks cover the plugs that never need to think about rain at all.
Load matters just as much as weatherproofing. String lights, a holiday inflatable, or a landscape lighting transformer are exactly the low-draw devices these plugs are built for. Anything pulling serious current, like a space heater or a high-wattage tool, needs its amp rating checked against the plug's own listing first; going over it is a fire risk no IP rating changes.
What Owners Say After a Season Outside
Outdoor plugs get judged less on smart home polish and more on whether they're still working after a full season outside. Here's the paraphrased pattern from owner feedback on each pick.
Kasa EP40
Owners describe the EP40 as the plug they forget is even a smart device, with reports of consistent app response after repeated seasons of outdoor exposure. Durability outdoors gets more praise than any smart home feature. The most common critique is the lack of any Apple Home path on this exact listing; some buyers say they wish it were clearer up front that TP-Link sells a separate HomeKit-compatible EP40A model instead.
Tapo P400M
Owners moving from older WiFi-only outdoor plugs call out the Matter pairing as noticeably simpler, joining Apple Home, Alexa, or Google Home from a single setup step instead of separate app configurations for each. The long WiFi range draws specific praise from owners powering detached garages or far corners of a yard. The recurring friction point is an early firmware update needed soon after unboxing, a one-time step some owners say the included instructions don't flag clearly.
Meross Outdoor Smart Plug
Owners who chose the three-outlet version consistently cite the socket count as the reason, running landscape lighting and a fountain pump from one weatherproof box instead of two separate plugs. Apple Home owners report that remote control away from the house behaves like any other HomeKit accessory, reliable once a home hub is already in place, confusing to troubleshoot if it isn't. The recurring complaint is the IP44 rating itself, with owners in fully exposed, uncovered spots saying it needs some kind of cover to hold up long-term.
Jacob’s read on this category
The water rating is the real spec here, not the smart home feature list. Buy for how exposed the actual mounting spot is: under a covered porch or patio, IP44 is plenty, and the extra outlet is worth more than a rating you'll never test. Fully open yard or anywhere a sprinkler or hose can reach it, spend the little bit extra on IP64 or IP65 instead. Once the water rating fits the location, outlet count and which smart home app it lives in are genuinely a personal-preference call.
Picking the Right One for Your Yard
Match the plug to the spot on the house, not the other way around.
If the real goal is tracking what a device is costing you to run rather than just switching it on and off, our energy-monitoring plug guide covers indoor-rated picks built around live wattage instead of weather sealing.
Frequently Asked Questions
Behind This Comparison
We pulled current listings and manufacturer spec pages for each plug, cross-checked IP ratings and smart home compatibility against the brand's own product pages rather than marketing copy alone, and confirmed each ASIN resolves to the exact model named here, not a similarly named sibling SKU with different specs. Pricing and availability were verified against the live Amazon listings on 2026-09-24.
We do not take payment from TP-Link, Meross, or any brand mentioned here. If you spot an error, please let us know.