I wanted smart outlets that didn't require plugging bulky adapters into wall plates. The TP-Link Kasa In-Wall Outlet replaces a standard outlet with smart capability built-in. After four months, it works reliably, though the WiFi/cloud architecture has inherent limitations.
Design & Build
Replaces a standard duplex outlet - once installed, it looks like a regular outlet with a small LED indicator. Clean appearance without visible smart home gadgets.
Both outlets are independently controllable. Standard tamper-resistant receptacles.
Build quality is good. TP-Link makes professional-grade networking equipment and that quality shows here.
Features
Two independently-controlled outlets in one device. Schedule each outlet separately, create scenes, set timers.
Works with Alexa and Google Assistant. No native HomeKit support (a limitation of the Kasa line).
The Kasa app provides energy monitoring, scheduling, and away mode (random on/off to simulate occupancy).
WiFi-connected with cloud dependency. Local control is limited without internet connectivity.
Home Assistant integration through the Kasa integration - cloud-based, adding latency.
Performance
Response time is acceptable - 1-2 seconds for most commands. Not as fast as local Zigbee/Z-Wave, but usable.
WiFi reliability has been good. The outlet stays connected and responds to commands consistently.
During an internet outage, the physical outlets still work (they're always-on by default) but smart control is lost. This is the inherent WiFi/cloud limitation.
Energy monitoring is reasonably accurate for tracking device power consumption.
Ease of Use
Installation requires electrical work - turn off breaker, remove old outlet, wire new outlet. Not difficult if you're comfortable with electrical, but it's not plug-and-play.
Requires a neutral wire, which most modern homes have but some older construction doesn't.
App setup is straightforward once installed - scan code, connect to WiFi, name outlets.
Value
Around $35-40 for a dual smart outlet that replaces ugly plug-in adapters. Good value for the clean installation.
Energy monitoring included without subscription. TP-Link doesn't charge for app features.
Compare to two smart plugs ($30-40) that block outlets and look bulky - the in-wall option is more elegant.
Pros
- Clean in-wall installation
- Two independent outlets
- Energy monitoring included
- Alexa and Google support
- TP-Link build quality
- No subscription fees
Cons
- No HomeKit support
- Cloud-dependent for smart features
- Requires neutral wire
- Installation requires electrical work
- Local control limited
- WiFi latency vs local protocols
Final Grade
The TP-Link Kasa In-Wall Outlet is a well-built smart outlet that looks clean once installed. The independent outlet control and energy monitoring are practical features. The main limitations are typical of WiFi smart devices: cloud dependency and no local control. If you're okay with that architecture (and don't need HomeKit), it's a solid choice. For full local control, consider Zigbee or Z-Wave in-wall outlets instead - they require a hub but don't depend on cloud connectivity.