Product Library / Plugs & Outlets
Research profile · last verified 2026-08-17Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (EP25)
⚠ Similar names, different products: TP-Link sells the same plug under two model strings — 'EP25' singly and 'EP25P4' as a four-pack — and they are one product, not two. Worth knowing where this plug lives in TP-Link's house: Kasa and Tapo are separate brands with separate apps and separate product lines, so a Tapo plug's facts never carry across to a Kasa one, and TP-Link's own EP25 URL now redirects from tp-link.com to kasasmart.com.
Exactly which product this is[1]
- Model number
- EP25
- Generation
- Not established
- Region this page covers
- US
- Also sold or listed as
- EP25P4
“Not established” means we have not sourced that detail yet — not that the product has no model number, generation or regional variant. We publish the gap rather than filling it.
Compatibility
| Ecosystem | Support | The catch |
|---|---|---|
| Amazon Alexa | WorksWorks with this ecosystem[1] | Named on the product's own page, which describes voice control through 'Alexa, Google Assistant, or Samsung SmartThings enabled devices'. The page names the platform without enumerating behaviours beyond voice control, so the depth beyond that is not certified here. |
| Google Home | WorksWorks with this ecosystem[1] | Named on the same first-party line as Alexa and SmartThings — and note TP-Link's wording, 'Google Assistant', the voice layer rather than Google Home as a platform. The distinction is not resolved on the page. |
| Apple Home | InconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[1] | ⚠ GENUINELY CONTRADICTORY ON THE VENDOR'S OWN PAGE, and recorded as the unknown that makes rather than resolved in either direction: HomeKit appears in the page's TITLE metadata, while the specification and compatibility section names only 'Alexa, Google Assistant, or Samsung SmartThings enabled devices' and says nothing about Apple. A title tag is marketing chrome and a spec section is a claim; when a vendor's own surfaces disagree, this catalogue records the conflict instead of picking the flattering half. Verify against Apple's own Home app before buying this for an Apple household. |
| SmartThings | WorksWorks with this ecosystem[1] | 'Samsung SmartThings' is named directly in TP-Link's own compatibility line for this model — a first-party per-product statement, which is rarer on these shelves than it sounds; most SmartThings cells in this catalogue rest on Samsung's partner directory, which enumerates no models for US readers. |
| Home Assistant | InconclusiveWe researched this and the evidence doesn't settle it — the catch explains why[1] | Not established. TP-Link's page for this plug names Alexa, Google Assistant and SmartThings and does not mention Home Assistant — but a commercial vendor omitting a community platform is weak evidence either way, and no Home Assistant documentation naming the EP25 was read in this pass. Recorded as unknown rather than converted into a none. |
? Inconclusive means we researched that ecosystem and the evidence doesn’t settle it — the catch says why, and the sources are listed below. It is a statement about the available evidence, never a verdict on the product. A Setup Check researches your exact setup where the official sources don’t answer.
Protocols: WIFI[1]
What it can do[4]
You can tell it to
- On/off
- Energy monitoring
It reports
- Energy reading
Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.
Subscription reality[1]
✓ Works without a subscription: Yes.
Vendor account required: Optional — there is a documented way to use it without one.[5]
No plan, no tier, no fee named anywhere on the product's own page — scheduling, Away Mode and the energy monitoring are the product rather than a subscription level of it. That is the norm on this shelf and worth stating plainly, since it is emphatically not the norm one category over among the cameras.
Maintenance reality
- Works without the internet: Not established — we have not sourced this yet. It does not mean the product fails without the internet.
- Nothing to maintain — it is a mains plug rated '100 - 120 VAC, 15 A' with a 'Maximum Load' of '15 A, 1.8 KW for 120 V', which is a full 15-amp pass-through rather than the derated 10 or 12 amps some compact plugs carry. The physical design is the quiet selling point: at 2.61 × 1.49 × 1.57 inches TP-Link builds it slim enough to fit 'two plugs on the same outlet', which is exactly the failure most smart plugs have on a duplex receptacle.
- Security updates: Kasa 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.[3]
The catch
Two things to check before assuming this fits. The Apple question is unresolved on TP-Link's own site: HomeKit shows up in the page's title metadata while the actual compatibility line names only Alexa, Google Assistant and SmartThings — a contradiction inside one vendor's page, so an Apple household should verify rather than trust either half. And it is 2.4 GHz only, which is ordinary for a smart plug but still the thing most likely to make setup fail on a network that hides its 2.4 GHz band. No price is published on Kasa's own page, so this profile carries specs without a figure.
Who it's for
A household that wants two smart plugs on one duplex outlet — the slim body is the actual differentiator here — with real energy monitoring rather than on/off alone, and the full 15-amp rating that lets it run a space heater or a window unit rather than just a lamp. Alexa, Google and SmartThings homes are on solid ground; Apple households should confirm the HomeKit question first.
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 →
- [1] kasasmart.com, Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (EP25) — reached by 301 from tp-link.com — vendor-page research (first-party redirect recorded; internal contradiction flagged, not resolved), verified 2026-08-17Backs: Product identity, Protocols, Wi-Fi bands it can use, Power source, Installation, Required hub or bridge, Subscription, Market availability, Service status, Research status, Amazon Alexa compatibility, Google Home compatibility, Apple Home compatibility, SmartThings compatibility, Home Assistant compatibility
- [2] kasasmart.com, EP25 product page — no price published by the vendor — vendor-page research (absence recorded as absence), verified 2026-08-17Backs: Price
- [3] TP-LINK SYSTEMS INC., "PSTI STATEMENT OF COMPLIANCE" (static.tp-link.com, document dated 2026-03-18), read in full 2026-08-20 — a signed regulatory declaration under Schedule 1 of the UK PSTI Regulations 2023, covering "the TP-Link brand and its subsidiaries". Its support-period rule is stated verbatim: "TP-Link will provide security updates for our products during the pre-defined support period. The defined support period will end 3 years after the product's end-of-life date." The document then carries a per-model table — Product/Model Name, Model Number, Defined Support Period — with real dates (e.g. "20/2/2029", "11/7/2027", "31/12/2029 or later*") given SEPARATELY FOR EACH HARDWARE VERSION. TP-Link's own end-of-life FAQ (tp-link.com/uk/support/faq/3562/), read the same day, defines EOL as production having "ended on the model or the specific version of the model" and lists Home Networking and Business Networking products only — no Kasa or Tapo smart-home models appear in it. The Kasa EP25 appears nowhere in the table. — first-party regulatory declaration read (BQ-192 security-support sweep, method note 69 precedence) — PDF read page by page, verified 2026-08-20Backs: Security-update support period
- [4] TP-Link's own Kasa product page for the EP25, already cited on this record: the product's published name is "Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (EP25)" — energy monitoring is in the model's own title rather than a feature bullet — alongside app and voice switching. — vendor + ecosystem-documentation research (BQ-187 capabilities population, batch 12), verified 2026-08-20Backs: CapabilitiesChecked 2026-08-20. This page no longer lets us re-check it automatically, so that date is where this fact stands.
- [5] Kasa EP25 official datasheet PDF (static.tp-link.com, the datasheet linked from TP-Link's own EP25 support-download page), read 2026-08-21; corroborated by the HomeKit setup card published on that same download page (tp-link.com/us/document/41342/) and by TP-Link's Kasa-app setup FAQ (tp-link.com/us/support/faq/946/) — vendor-page research, verified 2026-08-21Backs: Vendor account required
- [6] SmartHomeWorkflow record maintenance (BQ-250 securitySupport.region backfill) — internal-review of the document this record already cites, verified 2026-08-27
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.