TP-Link Kasa Smart Plug HS103P4 4-Pack Review (2026): The

Why you should trust this review

I bought this four-pack with my own money and put the plugs into real daily use around the house. TP-Link did not provide them. Smart plugs are simple devices, but the things that separate a good bundle from a frustrating one, reliable reconnection, app stability, and clean voice integration, only reveal themselves once you actually live with them on your network. I set these up across lamps and small appliances and ran them through schedules, away mode, and voice control to see whether the budget price comes with hidden compromises.

How we evaluated

I installed all four plugs on lamps and small appliances, set up daily schedules and away mode in the Kasa app, and controlled them through Alexa, Google Assistant, and SmartThings. I tested how reliably they reconnected after power and router events, checked the body size against duplex outlets to see whether they block the second socket, and probed the practical limits, including the 2.4 GHz-only Wi-Fi and the lack of energy monitoring on this SKU.

Value and the per-plug case

The entire argument for the HS103P4 is cost. Buying four plugs in a bundle brings the per-outlet price down to the lowest of any credible Wi-Fi smart plug I would actually recommend. There are cheaper no-name plugs, but they come with sketchy apps and questionable reliability. The Kasa bundle is the cheapest one I trust. For someone outfitting a few lamps and devices for the first time, the four-pack is the most cost-effective way to get into smart plugs without gambling on an unknown brand.

Setup, app, and voice control

Setup through the Kasa app is straightforward, and no hub is required, which keeps both cost and clutter down. The app handles schedules, countdown timers, and away mode reliably, and it is one of the more stable smart-home apps at this price. Voice control works with Alexa, Google Assistant, and SmartThings, and in my testing the integrations were dependable for on and off commands. The broad ecosystem support means these plugs slot into whatever voice assistant you already use rather than forcing a particular platform.

Reliability and the track record

Reliability is the most important thing a smart plug can offer, and the Kasa line has earned trust through one of the longest owner-rating track records in the category, with hundreds of thousands of reviews averaging strong scores. In my use the plugs reconnected reliably after router reboots and held their schedules without dropping off. That established record is a real reason to choose this bundle over a newer, unproven competitor; you are buying a device that a vast number of households have already validated over years.

Form factor and the honest limitations

The compact body is a practical win: it does not block the second outlet on a duplex receptacle, so you can use both sockets, which is not true of bulkier smart plugs. The honest limitations are two. First, the plugs are 2.4 GHz Wi-Fi only, which is fine for most networks but can be finicky on mesh systems that aggressively force band steering; you may need to separate your 2.4 GHz SSID during setup. Second, this SKU has no energy monitoring. If you want to track power consumption, you need to step up to a different model like the HS300 strip.

Who should buy the TP-Link Kasa HS103P4 4-pack?

Buy it if you are setting up smart plugs for the first time and want the cheapest credible bundle that just works. Buy it if you use Alexa, Google Assistant, or SmartThings and want hub-free voice control across several outlets. Buy it if you have duplex receptacles and want plugs compact enough to leave the second socket free. For most first-time smart-home buyers, this four-pack is the safe, sensible starting point.

Skip it if you want energy monitoring, since this SKU does not offer it and you should look at the HS300 instead. Skip it if your network is a mesh that forces band steering and you do not want to fuss with separating the 2.4 GHz band during setup. And skip it if you only need a single plug, where the bundle’s value advantage disappears.

The verdict

The TP-Link Kasa HS103P4 four-pack is the smart plug bundle I recommend to anyone starting out. It is the cheapest credible option on a per-plug basis, the Kasa app is stable and handles schedules and away mode well, and hub-free voice control across Alexa, Google Assistant, and SmartThings means it fits whatever system you already run. The compact body leaves your second outlet usable, and the long owner-rating track record gives confidence that these will keep working for years. The limitations are narrow: 2.4 GHz-only Wi-Fi that can need a little coaxing on mesh networks, and no energy monitoring on this SKU. Neither is a dealbreaker for the core use case of automating lamps and small devices. If you want a trustworthy, affordable entry into smart plugs, this bundle is the default pick, and it earns that with proven reliability rather than flashy features.