Oakter WiFi Smart Plug Teardown

Oakter WiFi Smart Plug is a small, Wi-Fi-enabled power adapter that plugs into a regular wall outlet and controls the flow of electricity to connected devices. It can be used to remotely control appliances and electronics, set schedules, and monitor energy usage.

The Oakter WiFi Smart Plug is compatible with Alexa and Google Assistant, so you can control it with your voice. You can also use the Oakter app to control the plug from your smartphone or tablet.

The Oakter WiFi Smart Plug is a great way to automate your home and save energy. Here are some of the things you can do with it:

  • Turn on your lights before you get home from work.
  • Turn off your coffee maker when you leave for the day.
  • Schedule your air conditioner to turn on before you go to bed.
  • The Oakter WiFi Smart Plug is a versatile and affordable way to make your home smarter. It is available in two models: a smaller model that is suitable for small appliances (Smart Plug Mini) 1.3KW at 230V and a bigger one (Smart Plug Plus) which can handle 3.6KW at 230V which is suitable for larger appliances.

Thanks to Oakter that they sent me these Wi-Fi Smart Plugs for my teardown blog and video.

Let me dive and show you some of the internals of both the Oaktar WiFi Smart Plugs.

Oakter Smart Plug Mini

It comes with a nice packaging.

Oakter WiFi Smart Plug Teardown 1
Oakter WiFi Smart Plug Teardown 2

To open the plug remove the pins.

Oakter WiFi Smart Plug Teardown 3
Oakter WiFi Smart Plug Teardown 4

After opening the enclosure carefully, you will see the PCB as shown below.

Oakter WiFi Smart Plug Teardown 5
Oakter WiFi Smart Plug Teardown 6

Any WiFi Smart Plug has majorly 3 sections, one is the power supply section where AC mains is converted to DC to power the whole circuit, WIFI controller and a relay circuit. In some advanced WiFi Smart Plug you may also get the energy monitoring but it is not available in Oakter Wifi Smart Plug.

You can see a 10A AC relay is used for switching the WiFi Smart Plug ON/OFF. Near Relay Two LEDs are also given which indicates connectivity and relay status.

Oakter WiFi Smart Plug Teardown 7
Oakter WiFi Smart Plug Teardown 8

6621JS is the PWM AC to DC Converter it converts AC to DC 5V using transformer you can see on one side of the PCB.

Oakter WiFi Smart Plug Teardown 9
Oakter WiFi Smart Plug Teardown 10

Another Linear regulator (AMS1117 – 3.3V) is used for 5v to 3.3V which further powers the ESP8266 module.

Oakter WiFi Smart Plug Teardown 11

You can see in the image below AI-Thinker’s ESP8266 module is used for WIFI connectivity and Relay control.

Oakter WiFi Smart Plug Teardown 12

The hardware is pretty simple but the challenge remain how to make it lowest cost possible and yet reliable as it is a consumer electronics product for mass market.

Oakter Smart Plug Plus

In the Plus version there are small changes. The circuit is over all same just the PCB size is bigger, Relay size is bigger as this version handle more load, everything else remains same.

Oakter WiFi Smart Plug Teardown 13
Oakter WiFi Smart Plug Teardown 14
Oakter WiFi Smart Plug Teardown 15
Oakter WiFi Smart Plug Teardown 16

You can see the relay used here is 30A AC relay.

Oakter WiFi Smart Plug Teardown 17
Oakter WiFi Smart Plug Teardown 18
Oakter WiFi Smart Plug Teardown 19
Oakter WiFi Smart Plug Teardown 20
Oakter WiFi Smart Plug Teardown 21

A Wi-Fi smart plug is a small, electronic device that plugs into a standard wall outlet and allows you to control an appliance or device connected to it remotely using a smartphone, tablet, or voice command. It is a small, Wi-Fi-enabled power adapter that plugs into a regular wall outlet and controls the flow of electricity to connected devices.

If you are looking for a way to automate your home and save energy, a Wi-Fi smart plug is a great option. They are easy to set up and use, and they are compatible with a variety of devices and voice assistants.


I hope you found this teardown useful and learned something new!

If you have any feedback about the blog, you can share it in the comments below or contact me directly.

Read more exciting articles on Embedded Systems Design.


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