TP-Link Kasa Smart Wi-Fi Plug Slim (KP125M)
By Ethan Halfhide · Updated
The TP-Link Kasa KP125M (Kasa Smart Wi-Fi Plug Slim with Energy Monitoring) is a Matter certified Wi-Fi smart plug that tracks real-time and historical power use. TP-Link's US product pages still list it, but they show no direct price (the Buy Now links go to a third-party retailer), so we do not list a price as of October 2026. TP-Link says you can set it up over Bluetooth in the Kasa Smart app or scan its code with any Matter app, such as the Alexa, Google Home or Apple Home app, and control it by voice with Amazon Alexa, Apple Siri or Google Assistant. It is rated for 15 A and 1800 W (resistive load) at 100-120 V, measures 2.6 x 1.5 x 1.6 inches and is sized to avoid blocking the adjacent socket. Schedules, timers, group control and Away Mode are built into the Kasa app.
Compact Matter certified Wi-Fi smart plug with energy monitoring
TP-Link Kasa Smart Wi-Fi Plug Slim (KP125M)Specs and price last verified October 28, 2026
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Specifications
- Price
- Not listed
- Device type
- Smart Plug
- Ecosystems
- Alexa, Google Home, HomeKit, Matter
- Rooms
- Living Room, Bedroom, Kitchen, Home Office
- Connectivity
- Wi-Fi, Bluetooth, Matter
- Hub required
- No
- Rental friendly
- Yes
- Matter certified
- Yes
- Installation
- Plug-in
- Energy Star
- Not published
- Local control
- Not published
- Voice control
- Yes
About
The KP125M is the Kasa Smart Wi-Fi Plug Slim with Energy Monitoring, TP-Link's Matter certified Kasa plug. TP-Link describes it as mini-sized to avoid blocking adjacent sockets.
Energy monitoring shows the connected device's real-time and historical power consumption in the Kasa Smart app. Kasa's page also describes setting your electricity rate (single or time-of-use) to estimate your bill, but footnotes that as part of a new version of energy monitoring that will be available soon, and says an Auto-Off Timer is coming in an over-the-air update.
Setup runs over Bluetooth in the Kasa Smart app, or you can scan the included Matter code with a Matter-compatible app such as the Alexa app, Google Home app or Apple Home app. Other features TP-Link lists: remote on and off from anywhere, schedules and timers, group control, and Away Mode, which turns devices on and off at different times to make it look like someone is home.
Setup and compatibility notes
- Setup: onboard the plug over Bluetooth in the Kasa Smart app, or scan the included code with a Matter-compatible app such as the Alexa app, Google Home app or Apple Home app. TP-Link links a setup guide for its Matter products.
- Electrical rating: 100-120 V~, 50/60 Hz; max load 15 A, 1800 W (general use or resistive load), 1/6 HP motor.
- Size: 2.6 x 1.5 x 1.6 inches (66.5 x 38 x 40 mm).
- Operating range: 32 to 104°F (0 to 40°C), 10% to 90% relative humidity, non-condensing.
- Certifications: RoHS, FCC, UL and IC; the housing is V-0 UL94 flame-retardant PC.
- Voice: Amazon Alexa, Apple Siri or Google Assistant.
- Price: TP-Link's US product pages do not show a direct price; their Buy Now links go to a third-party retailer.
Pros
- +Matter certified: set up with the Alexa, Google Home or Apple Home app
- +Real-time and historical energy monitoring in the Kasa app
- +Slim design that avoids blocking the adjacent socket
- +15 A, 1800 W resistive load rating
- +Schedules, timers, group control and Away Mode
Cons
- −No direct price on TP-Link's US product pages
- −Wi-Fi band not published on the product pages
- −Upgraded energy monitoring and Auto-Off Timer listed as coming in a future update
- −No Thread support listed
How it compares
| Device | Price | Ecosystems | Matter | Hub required | Local control |
|---|---|---|---|---|---|
| TP-Link Kasa Smart Wi-Fi Plug Slim (KP125M) | Not listed | Alexa, Google Home, HomeKit, Matter | Yes | No | Not published |
| Eve Energy Smart Plug | $43.95 | Alexa, Google Home, HomeKit, Matter, SmartThings | Yes | Yes | Yes |
| TP-Link Tapo P110M Smart Plug Mini | $12.99 | Alexa, Google Home, HomeKit, Matter, SmartThings | Yes | No | No |
FAQ
- Does the Kasa KP125M work with Apple Home?
- Yes, through Matter. TP-Link says you can set it up by scanning the included code with a Matter-compatible app such as the Apple Home app, and it lists Apple Siri voice control.
- Does the KP125M monitor energy use?
- Yes. TP-Link says it shows the connected device's real-time and historical power consumption in the Kasa Smart app. Kasa says an electricity-rate bill estimate is part of an upgraded energy monitoring feature that will be available soon.
- What is the maximum load of the KP125M?
- TP-Link lists 15 A and 1800 W for general use or resistive loads, and 1/6 HP for motors, at 100-120 V.
- How do you set up the KP125M?
- Use Bluetooth onboarding in the Kasa Smart app, or scan its Matter code with the Alexa, Google Home or Apple Home app.
- How much does the Kasa KP125M cost?
- TP-Link's US product pages do not list a direct price as of October 2026, so we do not quote one here.
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About the author
Ethan Halfhide: Ethan Halfhide is a smart home enthusiast and AI technologist who follows the connected home market closely, from smart locks and security cameras to robot vacuums, lighting, sensors and hubs. He curates HomeGearLab's device directory, comparing products on published specs, compatibility, setup requirements and price so readers can pick gear that fits their home and works together.