Kasa Smart Wi-Fi Light Switch 3-Way (TP-Link HS210 Kit) Review
Control that awkward hallway light from your phone — and finally fix the 3-way switch.
The 3-way switch is the white whale of home automation. Kasa's HS210 kit solves it for the price of a couple of pizzas, and it does so without making you set up a smart home hub.
What the HS210 kit actually is
This is a two-switch pack designed to replace both ends of a 3-way circuit, meaning the light at the top and bottom of your stairs, or the two doors into your hallway, that you can already control from either wall plate. The pair talk to each other and to your phone over 2.4GHz Wi-Fi. No hub required, which is the whole pitch.
You get app control through Kasa, voice control via Alexa and Google Assistant, and scheduling. It's a light switch, not a dimmer, so it's strictly on/off. Both switches are physical paddles, so anyone in the house can still operate the light like a normal human without learning your ecosystem.
How it performs day to day
Once it's wired and connected, it's the kind of product you forget you own, which is the highest compliment you can pay a smart switch. The paddles feel solid and respond instantly. App commands are quick, schedules fire reliably, and the auto-off timer is genuinely useful for that closet or garage light someone always leaves on.
Kasa's app is one of the better ones in this price bracket. Setup walks you through the Wi-Fi handshake step by step, and the routines are easy enough that you won't need a YouTube tutorial. Reliability is the brand's reputation, and most owners report it staying connected for months without a thought.
The neutral wire catch nobody mentions until checkout
Here's the part that trips people up. The HS210 requires a neutral wire at the switch box. Older homes, especially anything wired before the mid-1980s, often don't have one, and you'll find out the hard way when you pull the old switch and there's no bundle of white wires to connect to. Check before you buy. Take the plate off, look for the neutrals, and confirm.
It's also Wi-Fi only on the 2.4GHz band. That's fine for switches, but if your router pushes everything to 5GHz you may need to split or name your bands so the switch can find the right network. Not hard, but worth knowing if your hallway is far from the router.
Pros and cons
Pros: properly solves 3-way circuits, which most cheap smart switches don't touch. No hub. Reliable connection. Clean app with solid scheduling and voice support. Priced low enough to do a few rooms without flinching.
Cons: needs a neutral wire and not every house has one. On/off only, no dimming. 2.4GHz Wi-Fi can be fussy with some routers. And like all Wi-Fi switches, a dozen of them around the house means a dozen devices on your network. For one or two circuits, no problem.
Who should buy it, and who shouldn't
Buy it if you have a genuine 3-way circuit you want to automate, your box has a neutral, and you want app and voice control without committing to a SmartThings or Hubitat hub. It's our pick for the person who wants to fix exactly one annoying hallway or stairwell light and be done.
Skip it if you want dimming, if your house lacks neutral wires, or if you're building out a large whole-home setup where a Zigbee or Z-Wave system on a hub will scale better. Also skip if you only have a single-pole switch, because then you want the cheaper Kasa HS200 and you're overpaying here.
The verdict
The HS210 does the one hard thing in this category, the 3-way switch, and it does it well for roughly $30 to $45 for the pair. It's reliable, hub-free, and easy to live with. The only real homework is confirming you have a neutral wire. Do that, and this is an easy recommendation.
Frequently asked questions
- Do I need a neutral wire for the Kasa HS210?
- Yes. The HS210 requires a neutral wire in both switch boxes. Pull off your existing switch plates and look for a bundle of white wires before buying. Homes wired before the mid-1980s frequently lack them.
- Does the HS210 need a hub?
- No. It connects directly to your 2.4GHz Wi-Fi network and is controlled through the Kasa app, plus Alexa and Google Assistant. There's no separate hub or bridge to buy.
- Can the HS210 dim lights?
- No, it's on/off only. If you want smart dimming for a 3-way circuit, you'll need a different model. The HS210 is a straight switch replacement.
Marcus has spent over a decade testing consumer tech and gadgets. He cares about whether a product earns its price in real life — not on a spec sheet.
