Product Library / Plugs & Outlets

Tapo Smart Wi-Fi Outdoor Plug, Matter (P400M)

Compiled by SmartHomeWorkflow Research · Tapo · Plugs & Outlets · ~$25.99 ($25.99 at time of research (2026-09-17), from TP-Link's own US Tapo store listing for this model (SKU 'Tapo P400M') — never treated as a live price. ⚠ IT IS STILL SOLD OUT, AND THE PRICE IS RECORDED ANYWAY: the listing now prints a figure where it printed none when it was read on 2026-07-29, so TP-Link's own asking price is established even though you cannot buy it there today. Stock state is a fact about the product, never a reason to withhold what the maker charges. What is established about availability is two readings 50 days apart — 2026-07-29 and 2026-09-17 — both showing it unavailable on TP-Link's own store, with no discontinuation notice published anywhere; nothing was read about the days in between, so this is not a claim of continuous unavailability. TP-Link's product page and its own P400M datasheet still publish no price. No price was taken from a third-party retailer or a search summary.)

Compatibility

Protocols: WIFI · MATTER^{[1][2][10][22]}

What it can do^[2]

• Alexa: On/off and scheduling only. There is no energy monitoring on this model, so no energy data exists to surface in any ecosystem — a gap that is the device's, not the platform's.

Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.

Subscription reality^[2][21]

✓ Works without a subscription: Yes.

Vendor account required: Optional — there is a documented way to use it without one.^[11]

TP-Link does sell a subscription, and it does not cover this plug. Tapo Care, read on TP-Link's own plans page on 2026-09-17, is a camera plan in three tiers — Cloud at $3.49/mo or $34.99/yr for up to 2 devices, Cloud Advanced at $11.99/mo or $119.99/yr, Cloud Advanced AI at $19.99/mo or $199.99/yr, the last two unlimited — and everything they unlock is camera footage: cloud storage, extended video history, AI analysis. The page's own FAQ reads 'Your Tapo camera works without a subscription.' No tier names plugs, outlets or outdoor devices, and no plug tier exists. Alongside that, no plan or paid tier appears in TP-Link's P400M datasheet or on its product page, including in the scheduling and away-mode sections that would be the obvious things to gate. So the scheduling and timers this plug is bought for are not behind a paywall. The limit worth knowing: TP-Link nowhere prints an explicit 'this product needs no subscription' sentence — this is the maker's own plan surface enumerated and read, which is a stronger basis than the absence of paywall wording in two product documents that this record previously rested on.

Maintenance reality^[2]

• Works without the internet: Inconclusive — we read the vendor's own material and it does not answer this either way. It does not mean the product fails without the internet.
• Two outlets, individually named and switched, on one weatherproof body. Datasheet ratings: 100–125 V~ 50/60 Hz; max load 15 A / 1800 W (general use / resistive load), 8 A incandescent, 1/6 HP motor — and note that TP-Link's product page states 1/2 HP for the same model (see theCatch). Radio: IEEE 802.11b/g/n, 2.4 GHz only; Bluetooth 4.2 is used for setup only. IP65 enclosure with a stated weatherproofing condition that is easy to miss and affects real installs: 'keep the plug face down and at least 12 inches (1ft) from the ground' and 'keep the plug covered with the weatherproof cover when not in use.' Operating range -20 °C to 50 °C (-4 °F to 122 °F), humidity 10–90% RH non-condensing. Body is V-0 (UL94) flame-retardant PC; the datasheet's certification line reads 'Matter, FCC, ETL, NCC'. TP-Link claims a built-in power amplifier giving Wi-Fi reach 'of up to 300 ft in open areas'. Dimensions 4.2 × 3.1 × 1.6 in (106.5 × 79.4 × 39.4 mm). Box contains the plug, a clamp, a screw and wall anchor, and the quick start guide. System requirements Android 5.0+ or iOS 10+. No energy monitoring — a real difference from TP-Link's own P210M in-wall outlet, which has it.
• Security updates: Tapo states its security-update commitment for this model as a period rather than a date: ends 3 years after the product's end-of-life date — and TP-Link's published end-of-life list covers Home and Business Networking only, so no end-of-life date exists for this smart-home model and no clock has started (UK-declared — the maker's legal commitment is filed for the United Kingdom). That is a floor measured from a starting point the manufacturer sets — a launch or a purchase — rather than a fixed end date, so it cannot be placed on a calendar here. We record the commitment as the manufacturer states it, in our words, rather than converting it into a date it did not give. This is a published commitment, not a gap in our research.^[9]

The catch

TP-Link's own two documents disagree about what this plug can drive, and if you are buying it for a pump the difference decides the purchase. The product page says 'Maximum Load: 15A, 1800W, 1/2 HP Motor'; TP-Link's own P400M(US) datasheet says '15 A Max, 1800 W Max (General Use / Resistive Load), 8 A Incandescent, 1/6 HP Motor'. That is a threefold gap in motor rating, and TP-Link's marketing copy simultaneously suggests 'swimming pool pumps' — most of which exceed both figures. This record carries the datasheet's numbers as the specification and flags the page's as the conflict; treat 1/6 HP as the number to design around until TP-Link reconciles them. Two smaller things: Matter appears in the datasheet's certification list but the product page's certification line reads 'RoHS, FCC, ETL' with no Matter, and a CSA registry entry for P400M could not be located, so the Matter claim currently rests on TP-Link's word rather than the certifying body's. And IP65 comes with conditions — face down, at least a foot off the ground, cover closed when idle. One more thing that decides whether you can act on any of this: TP-Link's own US store lists the plug at $25.99 and sold out, unavailable on both readings 50 days apart (2026-07-29 and 2026-09-17), with no discontinuation notice published anywhere.

Who it's for

A fit for a household that wants two independently switched outdoor outlets joined to Apple Home, Alexa, Google Home or SmartThings through Matter rather than a vendor cloud, and that already owns a Matter controller for that ecosystem — a HomePod, Apple TV, Matter-capable Echo, Nest hub or SmartThings hub. Good for lights, fountains and small resistive loads within the datasheet's 15 A / 1800 W envelope. Look elsewhere if you need energy monitoring, if you have no Matter controller and want ecosystem control rather than app-only control, or if the load is a motor near either published HP figure — the conflict makes that a bad bet. Also not the plug for a 5 GHz-only network.

Sources & method

Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →

Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.

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