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Kasa HS103 vs HS105 (2021): What’s The Difference?

Living in a smart home is the new norm of this century. People have become accustomed to the convenience of smart devices that they update their appliances to ones with smart features. But standard home appliances can still run as if they’re smart devices by using a smart plug. TP-Link’s Kasa HS103 and Kasa HS 105 are two of the best-selling smart plugs in the market today and we’re featuring them in this review to check out their similarities and differences.

Kasa HS103 vs HS105 vs Product B Comparison Chart

ModelKasa Smart Wi-Fi Plug Lite (HS 103)Kasa Smart Wi-Fi Plug Mini (HS 105)
 Amazon productAmazon product
PriceAmazon productAmazon product
Maximum Load12A15A
VoltageInput: 100-120VAC
Output: 100-120VAC
Input: 100-120VAC
Output: 100-120VAC
Network ProtocolIEEE 802.11b/g/nIEEE 802.11b/g/n
Wireless Type2.4GHz, 1T1R2.4GHz, 1T1R
IntegrationsAmazon Alexa & Google Assistant Amazon Alexa & Google Assistant
Systems RequirementsAndroid 5.0 or higher, iOS 10 or higherAndroid 5.0 or higher, iOS 10 or higher
CertificationRoHS, FCC, IC, ULRoHS, FCC, IC, UL
EnvironmentIndoor Use OnlyTemperature: 0º C~ 40º C ( 32° F ~ 104° F )
Humidity: 10%~90%, Non-condensing
MaterialPolycarbonate PlasticPolycarbonate Plastic
Dimensions (H x W x D)2.62″ x 1.57″ x 1.50″2.61″ x 1.49″ x 1.57″

Kasa HS103 vs HS105 Design

There is only a slight difference in size and weight between the Kasa HS103 and HS105.

Kasa HS 103 and HS 105 design and build
The Kasa HS103 and HS105 have the same design and build.

In terms of design and aesthetics, there is little difference between the Kasa HS103 and HS105. These smart plugs look very identical inside and out except that the Kasa HS105 appears to be very slightly longer, yet a lot lighter than the Kasa HS103. Without actually holding the two smart plugs in your hands, you will not notice the difference.

Among the smart plugs in the Kasa Smart Wi-Fi Plugs series, these two can be considered as twins. They have the same white plastic cuboid body with the power button on the right end and an LED indicator located in the corner. The polycarbonate plastic body is flame-retardant and the phospor bronze contacts are nickel plated making it rust-free and always connected to the network.

You may be able to use the Kasa HS105 outdoors as it can better withstand higher temperatures and humidity than the HS103. Then again, it does not have a plug cover like the Kasa Smart Outdoor Plug which is the Kasa smart plug designed for outdoor use.

Compared to other smart plugs in the market, the Kasa HS103 and HS105 are compact that you can easily stack up two smart plugs on one standard power outlet. Take note, however, that the Kasa HS103 is thicker and sticks out of the wall more compared to the Kasa HS105 and even to the already bulky Amazon Smart Plug.

Kasa HS103 vs HS105 Power Capacity

The Kasa HS103 can be used for small electronic appliances while the Kasa HS105 can accommodate appliances with higher power requirements.

Kasa HS103 and HS105 smart plug power capacity
Our recommendation: Use the Kasa HS103 for light appliances (left) and the Kasa HS105 for food heating appliances (right).

Power capacity is what really sets the Kasa HS103 and Kasa HS105 apart. In fact, TP-Link officially branded these two smart plugs as Kasa Smart Wi-Fi Plug Lite and Kasa Smart Wi-Fi Plug Mini respectively.

The Kasa HS103 is designed as a light smart plug for small electronic devices. It can power up home appliances with up to 12 Amperes power requirement. Examples of these are lamps, electric fans, TV’s, game consoles, and radio and music players. You can also use this plug for small office equipment like printers, computer monitors, desktop computers, and laptops.

Meanwhile, the Kasa HS105 can accommodate appliances with higher amperage up to 15A. It is safe to use with common kitchen appliances that use heat such as microwave ovens, coffee makers, bread toasters, and even small electric ovens. You may also be able to use this with a small window airconditioning unit.

Set-up and Smart Home Integration

Setting up the Kasa HS103 and HS105 is done with the Kasa Smart app.

Smart Plugs set-up and voice control features
Using the Kasa Smart app for set-up (left) and controlling the smart plugs with Alexa and Google Assistant (right).

It is very easy to set up these Kasa smart plugs for first use as everything is done with the Kasa Smart app. If you’re already using other Kasa smart devices, you may have already installed the app on your smart phone. Otherwise, install the app first (it’s both available for Android and iPhone users), and register your new account.

Once you have the app, you can proceed with pairing your smart plug. Just plug the Kasa HS103 or HS105 into the power outlet and it will automatically enter into pairing mode. You will easily notice this as the LED will blink amber and blue. Once the blue light becomes steady, your plug is paired with the Kasa Smart app and you’re ready to customize your preferences.

Controlling your smart plug with voice commands is also possible as the Kasa HS103 and HS105 are Alexa and Google Assistant-compatible. HomeKit is not part of the options yet, but there are news that this will be introduced as a new feature soon.

Kasa Smart App

The Kasa Smart app is used for all Kasa smart devices including the Kasa HS103 and HS105 smart plugs.

Kasa Smart App for HS103 an HS105
A peek into the intuitive features of the Kasa Smart app.

The Kasa Smart app is the default smartphone app for controlling all Kasa Smart Wi-Fi Plugs and other Kasa Smart devices such as the Kasa Spot indoor security camera and the Kasa Smart Wi-Fi Multicolor Light Bulb.

This app is what gives the Kasa HS103 and HS105 extra features other than switching appliances on and off. Within the Kasa Smart app, you will be able to customize these modes of your smart plug/s:

  • Schedule – Set a detailed schedule for switching on/off an appliance such as your coffee maker. You can further fine tune this by indicating different schedules per day.
  • Away – Going on a vacation and worrying about burglars breaking in? Why not fool them by making them think you’re home? Set your smart plug on Away mode and you can switch on/off the lights at random times within your specified window.
  • Timer – You can set a countdown on when you would like to switch your appliance on or off.


The Kasa HS105 seems to be the better choice because of the higher amperage but the price difference may have you end up choosing the Kasa HS103.

Amazon product

The Kasa HS103 is admittedly one of the most affordable smart plugs there is. It’s a steal, considering the price and the intuitive features made possible by the Kasa Smart app. If you have already planned on using a smart plug for a light electronic appliance, then this is the best option for you. Anyway, you can always add other Kasa Smart Wi-Fi plugs in your home and manage all of them in the Kasa Smart app.

Should you need a smart plug for appliances with higher amperage, then add the Kasa HS 105 to your Kasa Smart Wi-Fi Plug collection. We recommend using this smart plug for appliances that use heat like coffee makers and bread toasters.


📌 Can the Kasa HS103 or HS105 work on a 5G Wi-Fi network?

No, the Kasa HS103 or HS105 can only work on a 2G Wi-Fi network.

📌 Does the Kasa HS103 or HS105 reconnect automatically to Wi-Fi in case of power interruption?

Yes, these smart plug will auto connect to your Wi-Fi network once power is back.

📌 Can I dim lights with the Kasa HS103 or HS105?

No. The smart plug can only be used to switch lights on or off.

📌 Are these Kasa Smart Plugs weatherproof?

The Kasa HS103 is strictly for indoor use only. Though the Kasa HS105 can withstand up to 40º C temperature or 90% humidity, it is not designed outdoor use.

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Mauie Flores

Senior Editor at Compare Before Buying, blogger and content creator passionate about writing, music, and good food.