3 Channel WiFi switch

In stock (can be backordered)

Description of the Wifi Switch

Our WiFi Switch device is based in the ESP8266 Wifi module, it has 3 independent solid state channels, enabling the switching of up to 5A @ 220VAC/120VAC.

Relays wear over time, they make an annoying click each time they switch and are power hogs. We wanted to control more than a single channel and wanted a board that could be installed in existing switch boxes or be housed in an attractive ABS enclosure.

It enables you to switch 3 independent circuits via your browser or smart phone from anywhere in the world by connecting to your existing WiFi network. Each Wifi Switch unit is pre-programmed with the latest release of ESPEasy is available available (here) or from our website. The ESPEasy firmware allows over the air (OTA) firmware updates. ESPEasy integrates easily with Home/Building automation software like Domoticz, OpenHAB, ThinkSpeak and many more. Programmer headers are included for easy development via a suitable USB to serial converter (optional extra.)

Provision is made for a RC snubber circuit should you need to switch inductive loads (like induction motors). Three pluggable 5.08mm connectors provide easy assembly or replacement of faulty devices. The circuit board is designed to fit in a Hammond 1593L enclosure which is an optional extra.

Power is supplied via a micro USB connection or a pluggable connector and an on board voltage regulation is provided for 12V operation. The design is based around a ESP8266-12 module.


We can also integrate it with 3rd party IoT dashboard websites like InitialState, Freeboard.io etc. Please feel free to contact us if you have any custom firmware requirements.


  • The board comes fully assembled and tested with an ESP8266-12 Module
  • Preprogrammed with ESPEasy firmware.
  • A jumper for bootloader selection
  • Programmer header
  • 4 x 2 Pole 5.08mm plugs
  • Designed to fit in a Hammond 1593L enclosure
  • Optical isolators between low voltage (DC) and high voltage (AC) side

Additional Information

It’s really difficult to develop your own firmware without the schematics they are published (here)

Its simple to develop your own firmware using the Arduino environment and there are many resources available online. A good place to start is at the ESP Community Forum

We can supply the Hammond case, but not with slots cut into the end caps. We are currently building of own CNC machine to offer this in the future.


Additional information

Weight 0.1 kg