Winner
Updated October 2026
Data from the official Leviton and TP-Link sites.
2026 verdict
For a Matter or Apple Home setup, the Leviton Decora Smart Wi-Fi Switch D315S is the better wall switch of this pair, winning on connectivity, integrations and power-off memory.
It is a hub-free 2.4 GHz Wi-Fi on/off switch that carries Bluetooth, is Matter certified so it commissions into Apple Home, Alexa, Google Home, SmartThings or Home Assistant at once, and keeps its schedules on board through an internet outage. The TP-Link Kasa HS220 is the one that actually dims, with app LED flicker calibration, adjustable fade speeds and a 2 year warranty against 1, but it needs a neutral and has no Apple Home or Matter. Choose the Leviton Decora Smart Wi-Fi Switch D315S for hub-free Matter on/off control, and the TP-Link Kasa HS220 when the circuit has to dim.
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| Feature | Leviton Decora Smart Wi-Fi Switch D315S | TP-Link Kasa HS220 | Winner |
|---|---|---|---|
| Price | $39.00 | $19.99 | TP-Link Kasa HS220 |
| Warranty | 1 year | 2 years | TP-Link Kasa HS220 |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi | Leviton Decora Smart Wi-Fi Switch D315S |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Samsung SmartThings, Home Assistant | Leviton Decora Smart Wi-Fi Switch D315S |
| Power Off Memory | YES | NO | Leviton Decora Smart Wi-Fi Switch D315S |
| Rating | 4.5 | 4.5 | Tie |
| Switches | 1 | 1 | Tie |
| Energy Monitoring | NO | NO | Tie |
| Status LED | YES | YES | Tie |
What the differences mean
Dimmer versus on/off
The TP-Link Kasa HS220 dims, rated for 300W of incandescent and 150W of dimmable LED or CFL, with low-end calibration and adjustable fade speeds. The Leviton Decora Smart Wi-Fi Switch D315S is an on/off switch, so a fixture that has to dim belongs on the Kasa.
Matter and Apple Home
The Leviton Decora Smart Wi-Fi Switch D315S is Matter certified, so one setup code adds it to Apple Home, SmartThings, Google Home, Alexa or Home Assistant, and Matter is multi-admin. The TP-Link Kasa HS220 stops at Alexa, Google Home, SmartThings and Home Assistant, with no Apple Home or Matter path.
Bluetooth and setup
The Leviton Decora Smart Wi-Fi Switch D315S carries Bluetooth 5.0 as well as 2.4 GHz Wi-Fi, which the CSA certificate lists as its transports. The TP-Link Kasa HS220 is Wi-Fi only, so a merged-band router can make its first pairing harder.
Load range
The Leviton Decora Smart Wi-Fi Switch D315S is rated for 15A general use, 3A of LED or CFL and a 1/3 HP motor, covering ceiling fans, exhaust fans and pumps. The TP-Link Kasa HS220 is a 2.5A dimmer capped at 300W of incandescent, so a motor load or a big fixture is outside it.
Power-cut behavior
The Leviton Decora Smart Wi-Fi Switch D315S stores its configuration and schedules in onboard memory and returns to its last state when power comes back, with the schedules still running while the internet is down. The TP-Link Kasa HS220 has no setting for the state it restores after an outage.
Which one to buy if
- you are standardizing on Matter
The Leviton Decora Smart Wi-Fi Switch D315S is Matter certified and multi-admin, so one switch can be commissioned into several ecosystems at once.
- Apple Home or Siri has to control the switch
Apple Home commissions the Leviton Decora Smart Wi-Fi Switch D315S over Matter, while the TP-Link Kasa HS220 has no HomeKit route.
- the circuit has to dim
The TP-Link Kasa HS220 is the dimmer of the pair, with LED flicker calibration and fade speeds the Leviton Decora Smart Wi-Fi Switch D315S does not have.
- the switch must return to its last state after a power cut
Power-off memory and on-device schedules are documented on the Leviton Decora Smart Wi-Fi Switch D315S and absent from the TP-Link Kasa HS220.
- you want the cheaper hub-free dimmer
The TP-Link Kasa HS220 wins the pair on price and a 2 year warranty, and it dims a normal room circuit without a hub.
Winner
$39.00
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Power Off Memory: YES
- - Price: $39.00 vs $19.99
- - Warranty: 1 year vs 2 years
$19.99
- + Price: $19.99
- + Warranty: 2 years
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth
- - Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
What owners say
TP-Link Kasa HS220 owners describe an install the app walks them through in about fifteen minutes and dimming that is smooth with no dead zone at the bottom, crediting the low-end calibration for stopping LED flicker. The features they highlight are the adjustable fade on and fade off speeds, brightness presets, sunrise and sunset schedules and Away Mode, plus switches that reconnect on their own after a power cut and still work manually when the network is down. Their complaints are the usual Kasa ones: a neutral wire is required, it is single pole only, the deep rear module fights a shallow box, it is 2.4 GHz and 120V only, and there is no Apple Home, no Matter and no energy monitoring. A few long-term owners report units that drift in brightness and occasionally cut out.
Frequently Asked Questions
Which is better overall: Leviton Decora Smart Wi-Fi Switch D315S or TP-Link Kasa HS220?
The Leviton Decora Smart Wi-Fi Switch D315S wins overall on connectivity, integrations and power-off memory, including Matter and Apple Home. The TP-Link Kasa HS220 is the better-reviewed dimmer with a 2 year warranty, but it has no Apple Home or Matter support.
What is the biggest difference between the Leviton Decora Smart Wi-Fi Switch D315S and the TP-Link Kasa HS220?
Dimming. The TP-Link Kasa HS220 is a 300W Wi-Fi dimmer with fade control and LED calibration. The Leviton Decora Smart Wi-Fi Switch D315S is a Matter certified on/off switch rated for 15A, 3A of LED or CFL and a 1/3 HP motor.
Which switch restores its last state after a power cut?
The Leviton Decora Smart Wi-Fi Switch D315S keeps its configuration and schedules on board and returns to its last state, with schedules still running without the internet. The TP-Link Kasa HS220 does not restore a set state after an outage.
Do they need a hub or a neutral wire?
Neither the Leviton Decora Smart Wi-Fi Switch D315S nor the TP-Link Kasa HS220 needs a hub: both join 2.4 GHz Wi-Fi directly. Both require a neutral wire in the wall box, and both are single-pole.
Who should buy the Leviton Decora Smart Wi-Fi Switch D315S?
Buy the Leviton Decora Smart Wi-Fi Switch D315S for hub-free Matter and Apple Home on a single on/off circuit, for a fan or pump that needs the 1/3 HP motor rating, or when power-cut state memory matters.
Who should buy the TP-Link Kasa HS220?
Choose the TP-Link Kasa HS220 if the box has a neutral and you want a cheaper no-hub Wi-Fi dimmer for LED or incandescent lights, with a 2 year warranty and app flicker calibration, and Apple Home is not required.
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