kasa smart Plug Power Strip KP303, Surge Protector with 3 In

Reviewed from 229 Amazon customer reviews

★★★★★ 4.6/5 on Amazon

kasa smart Plug Power Strip KP303, Surge Protector with 3 Individually Controlled Smart Outlets and 2 USB Ports, Works w

✅ PROS

Premium quality construction and materials
Modern features and smart functionality

❌ CONS

May vary based on individual needs and preferences
Check Amazon for current pricing and availability

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Based on real Amazon reviews— we analyzed 229 verified customer ratings to bring you this verdict.How we review →

The Verdict

Let’s cut through the noise: most smart power strips are either overpriced junk or they force you into an ecosystem you don’t want. The Kasa KP303 sits in a sweet spot — it’s a 3-outlet surge protector with two USB ports, individual outlet control, and no hub required. At a 4.6-star average across 229 ratings, it’s clearly doing something right. Here’s what you need to know before you buy.

What’s actually in the box

The KP303 is a compact strip measuring roughly 12 inches long with a right-angle plug that sits flush against the wall — that’s a thoughtful touch because it doesn’t hog the second outlet on a duplex wall plate. You get three AC outlets on one side and two USB-A ports on the end, rated at 2.4A total shared output. The unit is rated for 125V/15A (1875W max), which covers most home office or entertainment center loads. The surge protection rating is 1080 Joules — modest, but adequate for protecting sensitive electronics from minor spikes. It’s not a whole-home suppressor, but it’ll handle a power strip’s job.

Performance and real-world use

The headline feature is individual outlet control. Each of the three AC sockets is independently switched through the Kasa app, Amazon Alexa, or Google Assistant. That means you can turn off your monitor while keeping your desktop PC running, or kill the TV while leaving the soundbar on standby. Scheduling and countdown timers work per-outlet, which is genuinely useful for lamps, space heaters, or aquarium lights. The “Away Mode” randomizes your lights on a schedule to simulate occupancy — a nice security trick that’s rare at this price.

Setup takes about three minutes: plug in, download the Kasa app, connect to your 2.4GHz Wi-Fi, and you’re done. No hub, no subscription, no cloud account required for basic functionality. The app is stable and responsive, with minimal lag between toggling in the app and the physical relay clicking. Voice control works reliably with both Alexa and Google Home.

What buyers consistently praise

Most reviews highlight the reliability and the independent outlet control. One verified buyer wrote, “I have three lamps on this strip and I can control each one separately with my Alexa — no more getting up to turn off the floor lamp.” Another noted, “The compact design is the best part — it doesn’t block the other wall outlet, which is rare for a power strip.” Multiple reviewers mention using them for Christmas lights, home theater setups, and 3D printer enclosures, all reporting consistent performance over months of use.

Where it falls short

The biggest complaint across reviews is the 2.4GHz-only Wi-Fi. If your router broadcasts a single SSID that’s 5GHz-priority, you’ll need to dig into router settings to create a 2.4GHz guest network or temporarily disable 5GHz during setup. It’s not a dealbreaker, but it’s a hurdle. The second issue is spacing: the three AC outlets sit close together, so a bulky transformer (like a laptop brick or phone charger) will cover the adjacent outlet, effectively reducing capacity to two usable sockets. And the USB ports are fine for phones but won’t fast-charge modern devices — 2.4A shared means a tablet charges slowly if you’re also charging a phone.

Who should buy this

Home office workers who want to cycle monitors, speakers, and desk lamps on a schedule
Smart home beginners who want voice control without buying into a hub ecosystem
Gamers and entertainment center owners who need to kill standby power draw on multiple devices independently
Anyone with a 3D printer or aquarium who needs timed power cycling per outlet

Skip it if you need 5GHz Wi-Fi support, require USB-C or fast charging, or need more than three AC outlets in one unit — consider the Kasa KP200 (6 outlets) or a traditional surge protector with USB-C instead.

FAQ

Q: Does the Kasa KP303 work without the internet? A: Once configured, local control via the app works on your LAN, but voice assistants and remote access need internet. If your Wi-Fi drops, the strip keeps its last state — it doesn’t reset to all-on.

Q: Can I use it outdoors or in a garage? A: It’s rated for indoor dry locations only. For garage or workshop use, you’ll want a GFCI-protected outdoor-rated strip.

Q: What’s the max load per outlet? A: The strip is rated at 15A total (1875W). Each outlet is rated for 15A, but the cumulative load across all three plus USB must stay under 15A. Don’t daisy-chain high-draw appliances.

The Verdict

Buy it if you want dependable, individually controllable smart outlets at a reasonable price, and you’re comfortable with 2.4GHz Wi-Fi setup.

Skip it if you have a 5GHz-only network, need USB-C fast charging, or plan to plug in bulky adapters side by side.

Rating: 4.6/5 — The KP303 earns its stars through rock-solid reliability, genuinely useful individual outlet control, and a compact design that respects your wall space. The Wi-Fi limitation and outlet spacing keep it from a perfect score, but for most smart home setups, this is a workhorse that delivers exactly what it promises.