TP-Link Tapo Smart 3 Way Dimmer Switch KIT, Matter Compatible, Energy Monitoring
Quick take
This TP-Link Tapo 3-way dimmer kit lets you control one set of lights from two locations, with 0–100% dimming plus app and voice control. It supports Matter, so it can be added to common smart home ecosystems, and it also includes energy monitoring for connected lighting. The biggest practical caveat is the wiring requirement, it needs a neutral wire and the 3-way setup can be specific to how your line and load wires are arranged.
Pros and cons
Pros
- True 3-way dimming with full brightness control (0–100%).
- Matter compatibility for easier cross-platform setup, plus support for Alexa, Siri, Google Home, and SmartThings.
- Energy monitoring for connected lights.
- In-app dimmer calibration can help ensure dimming behavior matches your specific bulbs.
- Convenient scheduling features and effects like fade on/off.
Cons
- Neutral wire is required, so it may not work in older installations without rewiring.
- Physical size can be tight for some electrical boxes (you may need extra wire management).
- Wiring setup details matter for 3-way circuits, so plan to follow the instructions closely.
What buyers think
Buyer feedback is generally positive, especially around dimming performance and smart home integration. Several people highlight that setup can be straightforward, and that the Tapo app plays an important role in getting the dimmer behavior working as expected. There are also recurring notes that the switches feel well-built and look good compared with some other brands. The most repeated practical friction is install fit, the back of the switch can take up more space in the electrical box, which may require careful wire rearranging.
Who this dimmer kit is for
This is a strong choice if you want smarter control in a 3-way setup, like a hallway or stairway where two switches control the same light. It also makes sense if you care about compatibility across ecosystems (Matter support plus major voice assistants) and want more than on/off, specifically smooth dimming with custom schedules and scenes or routines.
Key features that matter in everyday use
3-way lighting control plus smooth dimming
You get dimming from two locations using a main switch and a satellite switch, with brightness control from 0 to 100%. The kit is designed to work with both traditional incandescent bulbs and dimmable LED lighting (the kit is intended for modern energy-efficient LEDs as well).
Matter compatibility and multi-platform control
The switch is Matter-certified, so it can work with many major smart home platforms. It also supports integration with Alexa, Apple HomeKit (via Siri), Google Home, and Samsung SmartThings, giving you options depending on which ecosystem is already in your home.
Energy monitoring for connected lights
If you want visibility into lighting energy use, this model includes energy monitoring, which can be helpful when you’re trying to reduce electricity costs or compare lighting behavior before and after changing bulbs or schedules.
App control, voice control, and scheduling
You can control lights remotely through the Tapo app, and also use voice commands through supported assistants. Built-in scheduling options let you automate on/off states and dim levels at specific times.
Comfort and “away” style features
Fade on/off helps with smooth transitions when lights turn on or off, which can be nicer than abrupt brightness changes. There’s also a mode intended to randomly turn lights on and off to help mimic occupancy when you are away.
Installation and compatibility considerations
Neutral wire requirement is the deal-breaker for some homes
This smart dimmer kit requires a neutral wire. If your switch boxes do not have a neutral conductor, you may need an electrician to evaluate options. If you do have neutral wiring, that removes one of the biggest risks of choosing a smart switch that later can’t be completed.
3-way wiring setup needs attention
Because this is a 3-way circuit kit, how wires are connected (line versus load) can affect correct operation. Buyers note that following the instructions matters, but installation can still be manageable with careful planning.
Electrical box space can be tight
Some users report that the back of the dimmer is physically larger, requiring extra time to remove excess wire length and rearrange wiring so everything fits. If your boxes are already crowded, measure your available space before committing.
Dimming calibration may be important
If dimming does not seem to respond smoothly across the full range, the app includes a calibration/configuration area to match the dimmer behavior to your lights. This is a practical feature because LED compatibility can vary by bulb.
Pros and cons (buying verdict)
Best for
- Homes with an existing 3-way circuit where you want dimming from two locations.
- Buyers who want Matter compatibility and support for Alexa, Siri, Google Home, and SmartThings.
- People who value energy monitoring and automation (schedules, fade transitions, away mode).
- Anyone comfortable installing smart switches and willing to check neutral-wire availability.
Consider a different option if
- You do not have neutral wiring in the switch box and prefer not to rewire.
- Your electrical boxes are very tight, and you want the smallest possible smart switch hardware.
- You want a “plug in and forget it” experience without needing any wiring verification or dimmer calibration.
Price and availability
Pricing can vary by retailer, but this kit is positioned as a mid-budget option for a 3-way smart dimming setup with Matter and energy monitoring. Use the button below to check the latest price on Amazon.
Alternatives to consider (how to choose)
If you’re comparing other smart dimmer switches, focus less on brand names and more on these fit factors:
- Neutral-wire requirement: Many smart dimmers need it, so verify this first to avoid a dead end.
- 3-way support: Not every smart dimmer kit supports two-location control, confirm you’re getting a compatible main and satellite configuration.
- Matter support: If you plan to use Apple Home, Google Home, or SmartThings, Matter can simplify cross-ecosystem onboarding.
- Bulb compatibility and dimmer calibration: Look for app calibration or bulb matching guidance if you’re using LEDs.
FAQ
Does this Tapo dimmer kit support Matter?
Yes. The switch is Matter-certified, which helps with compatibility across major smart home platforms.
Does it require a neutral wire?
Yes, neutral wiring is required for this dimmer kit to work.
Is it a true 3-way dimmer, or just on/off?
It’s a 3-way dimmer kit, offering brightness control from 0 to 100%, not just on/off.
Will it work with alexa, siri, google home, and smartthings?
It supports Alexa, Apple HomeKit (via Siri), Google Assistant, and Samsung SmartThings.
What if my lights do not dim smoothly across the full range?
The Tapo app includes a configuration/calibration step intended to help match dimming behavior to your specific lights.
Is it hard to fit into an electrical box?
Some buyers report that the switch hardware can take up a lot of room, so wire management may be needed to make it fit comfortably.
Does it include energy monitoring?
Yes, the kit includes energy monitoring for connected lights.
What kinds of bulbs is it designed for?
It is intended to dim dimmable LEDs and also supports traditional incandescent bulbs (within the limits of the device’s rated load).
Specifications
| Product Title | TP-Link Tapo Smart 3 Way Dimmer Switch KIT, Matter Compatible, Energy Monitoring, Neutral Wire Required, Works with Alexa, Siri, Google Home, SmartThings, UL Certified, 2.4GHZ Wi-Fi, Tapo S515D KIT |
|---|---|
| Category | Tools & Home Improvement > Electrical > Switches & Dimmers > Wall Switches > Dimmer Switches |
| Brand | Tapo |
| Manufacturer | TP-Link |
| Color | White |
| Material | Plastic |
| Item Weight | 9.92 ounces |
| Operation Mode | ON-OFF-ON |
| Operating Voltage | 120 Volts |
| Contact Type | Normally Closed |
| Connector Type | Clamp |
| Switch Type | Toggle |
| Terminal | Screw |
| Circuit Type | 3-way |
| Mounting Type | Wall Mount |
| Actuator Type | Toggle |
| Number of Positions | 2 |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Controller Type | Amazon Alexa, Apple HomeKit, Google Assistant, IFTTT, SmartThings |
| Control Method | App, Remote, Voice |
| Connectivity Protocol | Matter, Wi-Fi |
| Wattage | 600 watts |
| Control Type | full |
| Compatible Devices | Amazon Alexa, Apple HomeKit, Google Home, Samsung SmartThings |
| Smart Home Compatibility | Smart Home Compatible |
| Item Dimensions | 5.06 x 3.33 x 1.76 inches |
Recommended next
Kasa Smart 3 Way Dimmer Switch KIT, Dimmable Light Switch Compatible with Alexa, Google Assistant and SmartThings, Neutral Wire Needed, 2.4GHz, ETL Certified, No Hub Required, White (KS230 KIT v2)
The Kasa Smart 3-way dimmer kit is designed to replace traditional 3-way switches so you can control dimmable lighting from your phone and via Alexa/Google Assistant. It requires a neutral wire and 2.4GHz Wi-Fi, and it’s best for buyers who want smooth dimming plus app-based schedules. The main tradeoff is installation complexity and fit (it can be a tight squeeze in older or cramped electrical boxes).
Kasa Apple HomeKit Smart Dimmer Switch KS220P3, Single Pole, Neutral review
Kasa’s HomeKit-compatible smart dimmer switch brings app control and voice control to a standard single-pole wall setup, with schedules, timers, and a smooth “gentle off” fade feature. It requires a neutral wire and a 2.4GHz Wi-Fi network, so it’s best for buyers who are ready to confirm compatibility before installing.
Kasa Matter Smart Dimmer Switch: Voice Control w/Siri, Alexa & Google Assistant (KS225)
The Kasa KS225 Matter smart dimmer switch brings voice, app, and scheduling control to standard lighting, with an install flow guided by the Kasa app. Best for shoppers who want one switch that fits Apple Home, Alexa, Google Home, and SmartThings through Matter, with a key catch: it requires a neutral wire and a 2.4 GHz Wi‑Fi setup.
TP-Link Tapo Matter Smart Dimmer Switch: Voice Control w/Siri, Alexa & Google Assistant, UL Certified, Timer & Schedule, Easy Guided Install, Neutral Wire Required, Single Pole, Tapo S505D(2-Pack)
The TP-Link Tapo Matter Smart Dimmer Switch (Tapo S505D, 2-pack) is a single-pole in-wall dimmer designed for smooth LED brightness control, with Matter support so it can work across major smart home platforms. It uses the Tapo app for setup, requires a neutral wire, and includes scheduling, timer features, and voice control (Siri, Alexa, Google Assistant).