The electronics and technology development companies in the world today are increasingly introducing the concept of a smart home that can make it easier for humans to control their homes anytime and anywhere.
Then I had the idea of making a project that was inspired by Sonoff products, I was very interested in developing it, I was inspired by the product, which is simple and easy to use and install.
DIY Smart Switch momentary 2 Gang and 2 Channel Relay SPDT
Documentation :

