Comparison
Kasa Smart Wi-Fi Power Strip HS300 vs Kasa Smart Wi-Fi Power Strip KP303: Which Should You Buy? (2026)
| At a glance | Kasa Smart Wi-Fi Power Strip HS300 | Kasa Smart Wi-Fi Power Strip KP303 |
|---|---|---|
| Rating | ★★★★⯨ 4.7/5 | ★★★★⯨ 4.7/5 |
| Price | $60-$80 | $25-$35 |
| Best for | People who want hard data on which devices waste power and want to automate them off. | Budget shoppers who want app-controlled outlets to kill standby power without paying for metering. |
| Guarantee | Amazon return policy applies | Amazon return policy applies |
| Check Today's Price → | Check Today's Price → |
Kasa sells both of these strips, the app is identical, and both carry the same 4.7 rating. The entire decision rests on one difference: the HS300 measures electricity use on each of its six outlets and keeps a history in the app, while the KP303 measures nothing — it just gives you three outlets you can switch remotely, at $25–$35 instead of $60–$80.
Everything else is shared: scheduling, timers, remote control, Alexa and Google Assistant, no hub required, ETL-certified surge protection. There's no hidden gotcha separating them. The extra money buys data and capacity — six controllable outlets and three USB-A ports on the HS300 against three outlets and two USB-A ports on the KP303. So the question isn't which strip is better. It's whether the data is worth anything to you.
The two strips
Kasa Smart Wi-Fi Power Strip HS300
The energy-monitoring benchmark: 6 individually controlled outlets with real per-outlet power tracking.
$60-$80 · Amazon return policy applies
Kasa Smart Wi-Fi Power Strip KP303
The affordable 3-outlet Kasa for targeted standby-power control without the HS300 price.
$25-$35 · Amazon return policy applies
What the monitoring actually buys you
Standby drain is real, but it's wildly uneven. Some devices sip a watt or two when "off"; others — older TVs, cable boxes, AV receivers, anything with a warm power brick — pull enough around the clock to show up on a bill. You can't tell which is which by looking. The HS300 settles it: plug the whole entertainment center or office setup into it, let it log for a week, and you'll know exactly which outlets deserve a shutoff schedule and which aren't worth the bother. That turns energy saving from guesswork into a ten-minute decision, and it's a big part of why the HS300 has been the reference product in this category for years — PCMag gave it an Editors' Choice.
The honest catch: for a lot of people, that discovery phase happens once. You watch the numbers for a week, set your schedules, and never open the graphs again. If you suspect that's you, the cheaper strip does the part that saves the actual money.
Where the KP303 is the smarter buy
Cutting power is the useful action; measuring it is just the diagnosis. If you already know what you want dead at night — the TV corner, the chargers, a space heater's outlet, holiday lights — the KP303 kills standby draw exactly as well as its expensive sibling, and it's compact enough to disappear behind furniture. One move worth running the numbers on: two KP303s give you six controllable outlets split across two rooms for roughly the price of a single HS300. If your standby offenders live in different places, that's better coverage than one big strip in one spot.
Skip this if
Skip the HS300 if you'd only ever control a lamp and a fan. It's the most expensive option in its category, and you'd be paying that premium for graphs you won't read. Skip the KP303 if your media setup has more than three devices you want on smart control — three outlets fill up fast. And skip both if your main goal is automating USB charging: the USB ports on each strip are always-on and can't be switched individually. Same goes for anything that must never lose power, like a router or DVR — those belong on a dumb outlet, and no smart strip helps you there.
Bottom line
Buy the HS300 if you want to find the waste before you fix it — per-outlet monitoring is the feature you're paying for, and nothing at the KP303's price replaces it. Buy the KP303 if you already know what to switch off and just want it handled on a schedule. The ratings are dead even, the app experience is dead even, and neither is a mistake. The only bad buy here is paying HS300 money for data you'll never look at.