SwitchiFy - ESP8266 based 4-way Switching home automation board: https://www.tindie.com/products/vijayenthiran/switchify-wifi-home-automation-board/.
This comes with pre-programmed firmware and open source android app. So no need to do any programming. And the board features Wemos D1-Mini. So if you are a DIY enthusiast, you can flash your own firmware with Arduino. Let me know what you guys think.
Docs on hackadayio:
Songle relays make me sad.
Is it? Why so?
The relay can handle 10A. The tracks I have made can handle 4A. I have considered the creepage distance between the tracks and given 100mils spacing between each tracks and tracks to components.
@Vijayenthiran_Subram Your answer shows that you took care of the capability of the tracks and the creep age distance which are both important when it comes to handling mains supply currents to avoid problems. As your sales go up, analyse the feedback from your customers and steadily improve the design. I think that this design and the idea are a good approach. Wish you a lot success with it.
Video uses different relays @David_Van_Cleef 
looks very cool, awesome project! Maybe tie it into IFTTT or similar so you can control it via Google Home or Alexa.
@Vijayenthiran_Subram Cheap Chinese crap. Omron is not that much more expensive.
@Richard_Vowles The video was taken when I was prototyping. Got the relays from the local shop. But for the sale, I am using Songle relays.
@David_Van_Cleef Thanks for the feedback. Will consider is for the next revision.
Mqtt capable firmware is necessary for a project like that.
@Tomas_Chovanec Definitely!