Smart Plugs / Kasa Matter Smart Outdoor Plug EP40M vs Zooz ZEN15 Power Switch (800LR revision)
Kasa Matter Smart Outdoor Plug EP40M vs Zooz ZEN15 Power Switch (800LR revision)
Zooz ZEN15 Power Switch (800LR revision)
The one to buy for a sump pump or dehumidifier — and it needs a Z-Wave hub.
Wins overall by 1.1 points
Quick Verdict
A 1.1-point gap makes the Zooz ZEN15 Power Switch (800LR revision) the straightforward choice here. The one to buy for a sump pump or dehumidifier — and it needs a Z-Wave hub.
The Kasa Matter Smart Outdoor Plug EP40M and Zooz ZEN15 Power Switch (800LR revision) are both closely matched smart Plug models, and the Kasa Matter Smart Outdoor Plug EP40M is $12 cheaper than the Zooz ZEN15 Power Switch (800LR revision) ($25.99 vs $37.95). On Energy Monitoring, the Zooz ZEN15 Power Switch (800LR revision) leads (9.5 vs 0.0/10) — whether power is genuinely measured, what quantities are reported, and where you can see them. On Ecosystem Support, the Kasa Matter Smart Outdoor Plug EP40M leads (9.0 vs 5.0/10) — matter, HomeKit, Alexa, Google, SmartThings and Home Assistant coverage. On Load Headroom, the Zooz ZEN15 Power Switch (800LR revision) leads (9.5 vs 7.5/10) — how much of the nameplate 15A you can actually use continuously, and what the plug is rated to do with motors, compressors and heaters — the spec buyers most often get caught by. Overall, the Zooz ZEN15 Power Switch (800LR revision) scores 8.1/10 across our 8 scoring categories versus 7.0/10 for the Kasa Matter Smart Outdoor Plug EP40M. Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Kasa Matter Smart Outdoor Plug EP40M | Zooz ZEN15 Power Switch (800LR revision) |
|---|---|---|
| Price | $25.99 | $37.95 |
| Release Year | 2024 | 2017 |
| Max Load | 15A / 1,875W total, shared across both outlets | 15A / 1,800W at 120V, single device only — the manual forbids plugging a power strip into it |
| Motor / Inductive Rating | 1/2 HP | 1 HP — six times the Kasa EP25's 1/6 HP and the highest here |
| Energy Monitoring | No — TP-Link staff confirmed on its own forum that it cannot be added by firmware and closed the request as Declined | Yes, measured — W, A, V and kWh with per-parameter reporting intervals (defaults 30s power, 300s energy/voltage/current) |
| Radio & Protocol | Matter over Wi-Fi (2.4GHz), Bluetooth for commissioning | Z-Wave 800 series with Z-Wave Long Range, S2 security and SmartStart |
| Hub Required | No for the Kasa app; a Matter controller is required for Apple/Google/SmartThings | Yes — a Z-Wave gateway (Hubitat, Home Assistant with a Z-Wave stick, SmartThings, Ring) is required and is not included |
| Works Without Internet | Yes — Matter control is local and Kasa keeps LAN control | Yes — Z-Wave is local by design; behaviour depends on your hub, not a vendor cloud |
| Switched Outlets | 2✓ | 1 |
| Pack Size | 1 | 1 |
| Price per Switched Outlet ($) | 13✓ | 37.95 |
| Dimensions | 110 x 39 x 81 mm (4.33 x 1.54 x 3.19 in) | 20 in including the cord x 2.6 x 1.1 in, 10 oz |
| Blocks Second Outlet | Not applicable — mounts on its own clamp rather than sitting on a duplex receptacle | No — it hangs off a cord rather than sitting in the receptacle |
| Weather Rating | IP64, ETL certified, -4°F to 122°F. The IP64 figure covers the sealed body; TP-Link publishes no rating for a socket with a cord inserted and the sockets are meant to face down | Indoor only, 32-104°F |
| Warranty | 24 months | 12 months |
| Colors | Black | White |
Category Scores
Load Headroom
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 9.5 against 7.5 — a 2.0-point margin on how much of the nameplate 15A you can actually use continuously, and what the plug is rated to do with motors, compressors and heaters — the spec buyers most often get caught by. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
Energy Monitoring
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 9.5 against 0.0 — a 9.5-point margin on whether power is genuinely measured, what quantities are reported, and where you can see them. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
Ecosystem Support
The Kasa Matter Smart Outdoor Plug EP40M leads clearly here, 9.0 against 5.0 — a 4.0-point margin on matter, HomeKit, Alexa, Google, SmartThings and Home Assistant coverage. If that is what you are buying for, the Zooz ZEN15 Power Switch (800LR revision) does not close the gap elsewhere.
Local Control
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 9.5 against 8.5 — a 1.0-point margin on whether switching and schedules survive an internet outage, or depend on a vendor cloud. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
Size & Fit
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 7.0 against 6.0 — a 1.0-point margin on whether it blocks the second outlet on a duplex receptacle, and how it mounts. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
Build & Safety
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 9.0 against 8.5 — a 0.5-point margin on certification, flame-retardant housing, overload protection, recall history and warranty. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
App & Automation
The Zooz ZEN15 Power Switch (800LR revision) leads clearly here, 8.5 against 8.0 — a 0.5-point margin on scheduling, away modes, sunrise/sunset triggers and how good the controlling app is. If that is what you are buying for, the Kasa Matter Smart Outdoor Plug EP40M does not close the gap elsewhere.
Value
The Kasa Matter Smart Outdoor Plug EP40M leads clearly here, 8.5 against 7.0 — a 1.5-point margin on what a switched, metered outlet actually costs once the pack size and any required hub are counted. If that is what you are buying for, the Zooz ZEN15 Power Switch (800LR revision) does not close the gap elsewhere.
Best For
Choose the Kasa Matter Smart Outdoor Plug EP40M if…
- • Ecosystem Support matters most to you — the Kasa Matter Smart Outdoor Plug EP40M scores 9.0/10 here (matter, HomeKit, Alexa, Google, SmartThings and Home Assistant coverage).
- • Value matters most to you — the Kasa Matter Smart Outdoor Plug EP40M scores 8.5/10 here (what a switched, metered outlet actually costs once the pack size and any required hub are counted).
- • You want to spend less — it's $12 cheaper.
- • Your main use case is outdoor or matter.
Choose the Zooz ZEN15 Power Switch (800LR revision) if…
- • Energy Monitoring matters most to you — the Zooz ZEN15 Power Switch (800LR revision) scores 9.5/10 here (whether power is genuinely measured, what quantities are reported, and where you can see them).
- • Load Headroom matters most to you — the Zooz ZEN15 Power Switch (800LR revision) scores 9.5/10 here (how much of the nameplate 15A you can actually use continuously, and what the plug is rated to do with motors, compressors and heaters — the spec buyers most often get caught by).
- • Local Control matters most to you — the Zooz ZEN15 Power Switch (800LR revision) scores 9.5/10 here (whether switching and schedules survive an internet outage, or depend on a vendor cloud).
- • Your main use case is heavy-appliance or energy-monitoring.
Pros & Cons
Kasa Matter Smart Outdoor Plug EP40M
Pros
- +1/2 HP motor rating — three times the EP25's, which matters for pond pumps and inflatables
- +Two outlets you can schedule separately, so lights and a pump are not tied together
- +Matter multi-admin plus a wide -4°F to 122°F operating range for real winter use
- +2-year warranty, unusual for outdoor gear at this price
Cons
- −No energy monitoring at all, and TP-Link has publicly refused to add it — the cheaper indoor Kasa plugs meter, this does not
- −IP64 is splash resistance, not immersion; a plug sitting in standing water or snowdrift is outside the rating
- −15A is the total for the pair, not per outlet — two 1,000W devices will trip it
- −Needs a Matter controller for Apple, Google or SmartThings; only the Kasa app works standalone
Zooz ZEN15 Power Switch (800LR revision)
Pros
- +The only plug here designed for inductive loads — 1 HP against 1/6 HP on a Kasa mini
- +Hardware overload protection cuts the relay at 16.5A sustained, independent of any hub
- +Four measured quantities (W, A, V, kWh) with tunable reporting thresholds — the richest metering in this table
- +Fully local Z-Wave with S2 security; no vendor cloud is in the path at all
- +Cord-mounted design frees both receptacles
Cons
- −Sources conflict on what it is for: retailers market it for 110V AC units and sump pumps, while the 800LR manual's safety list prohibits electric heaters, 220V boilers, 220V pumps/compressors and electrical dryers
- −Needs a Z-Wave hub — the most expensive prerequisite in this comparison
- −Amazon's single long-running ZEN15 listing has carried both the 500-series and the 800LR revision; buy from a Zooz dealer if you specifically need Long Range
- −One device only — the manual explicitly forbids connecting a power strip
- −$37.95 for a single outlet, with a 1-year warranty
Shop by Need
FAQs
Is the Kasa Matter Smart Outdoor Plug EP40M or Zooz ZEN15 Power Switch (800LR revision) better overall?+
Based on our 8-category scoring, the Zooz ZEN15 Power Switch (800LR revision) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Energy Monitoring, the Kasa Matter Smart Outdoor Plug EP40M or the Zooz ZEN15 Power Switch (800LR revision)?+
The Zooz ZEN15 Power Switch (800LR revision) scores higher on Energy Monitoring (9.5/10 vs 0.0/10) — whether power is genuinely measured, what quantities are reported, and where you can see them.
Which is better for Ecosystem Support, the Kasa Matter Smart Outdoor Plug EP40M or the Zooz ZEN15 Power Switch (800LR revision)?+
The Kasa Matter Smart Outdoor Plug EP40M scores higher on Ecosystem Support (9.0/10 vs 5.0/10) — matter, HomeKit, Alexa, Google, SmartThings and Home Assistant coverage.
Which is better for Load Headroom, the Kasa Matter Smart Outdoor Plug EP40M or the Zooz ZEN15 Power Switch (800LR revision)?+
The Zooz ZEN15 Power Switch (800LR revision) scores higher on Load Headroom (9.5/10 vs 7.5/10) — how much of the nameplate 15A you can actually use continuously, and what the plug is rated to do with motors, compressors and heaters — the spec buyers most often get caught by.
Which is better for Value, the Kasa Matter Smart Outdoor Plug EP40M or the Zooz ZEN15 Power Switch (800LR revision)?+
The Kasa Matter Smart Outdoor Plug EP40M scores higher on Value (8.5/10 vs 7.0/10) — what a switched, metered outlet actually costs once the pack size and any required hub are counted.
Is the Kasa Matter Smart Outdoor Plug EP40M worth the price difference over the Zooz ZEN15 Power Switch (800LR revision)?+
The Kasa Matter Smart Outdoor Plug EP40M is the cheaper option at $25.99 versus $37.95. Whether the pricier model is "worth it" depends on how much you value its lead in Energy Monitoring.
Which is better suited to my use case?+
The Kasa Matter Smart Outdoor Plug EP40M is the better fit if you mainly care about outdoor or matter. The Zooz ZEN15 Power Switch (800LR revision) is the better fit for heavy-appliance or energy-monitoring.
What's the warranty on the Kasa Matter Smart Outdoor Plug EP40M vs the Zooz ZEN15 Power Switch (800LR revision)?+
The Kasa Matter Smart Outdoor Plug EP40M ships with a 24-month warranty; the Zooz ZEN15 Power Switch (800LR revision) ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Premium Option
Tapo Smart Wi-Fi Power Strip P316M — $49.99
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.