TP-Link
Kasa Smart Wi-Fi Outdoor Plug
Outlets · Lighting
HomeKit onlyWi-FiOn Apple's list
Where to buy
- TP-Link websitetp-link.com
- TP-Link website (kasasmart.com)kasasmart.com
- Amazonamazon.com
- B&H Photo$15.99 · bhphotovideo.com
- Amazon CAamazon.ca
Search other stores
Store links open the product’s own page, matched to this accessory by name and model number. Prices are what each store showed on 22 October 2026 and will have changed, and stock isn’t checked; check that the model you buy says it works with Apple Home or Matter.
From store listings
$15.99 at 1 store on 22 October 2026.
| Connectivity | Wi-Fi |
|---|---|
| Weight | 0.65 lbs |
From the Bing Shopping page for “TP-Link Kasa Smart Outdoor Wi-Fi Plug EP40/EP40A/KP400”.
In ReReHome
Power and in-use state, plus live power and energy readings from Matter outlets.
And every other characteristic or Matter attribute it exposes.
Connectivity
- Wi-Fi
How it reaches your home
- HomeKit over Wi-Fi
Identifiers
| Manufacturer | TP-Link (Kasa Smart) |
|---|---|
| Model / SKU | EP40A |
Reported versions
| Version | Date | Source |
|---|---|---|
| Firmware 1.0.5 Build 230316 (HW V1.8) - improved Apple Home setup stability | 2023-04-13 | tp-link.com |
| Firmware 1.0.7 Build 230920 (HW V1.8) - improved HomeKit setup | 2023-11-24 | tp-link.com |
| Firmware 1.1.1 Build 250908 (HW V1.8) | 2026-03-11 | tp-link.com |
Compatibility notes
- TP-Link's HomeKit setup FAQ lists EP40A as the HomeKit-supported Kasa outdoor plug; the older KP401/KP400 outdoor plugs list only Alexa/Google/SmartThings on kasasmart.com.
- EP40M (matter:5009:258, Matter 1.0, certified 2023-02-27) is the separate Matter SKU of the outdoor plug - candidate only.
- Latest firmware 1.1.1 Build 250908 published 2026-03-11 (time sync, local communication security).
